diff --git a/build/contracts/BEMultiSigWallet.json b/build/contracts/BEMultiSigWallet.json
index bcc7467..2208994 100644
--- a/build/contracts/BEMultiSigWallet.json
+++ b/build/contracts/BEMultiSigWallet.json
@@ -233,8 +233,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [],
@@ -247,8 +246,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [],
@@ -261,8 +259,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [],
@@ -275,8 +272,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [],
@@ -289,8 +285,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -314,8 +309,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -334,8 +328,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -359,8 +352,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -379,8 +371,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -422,8 +413,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [],
@@ -436,8 +426,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -468,8 +457,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -506,13 +494,11 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "stateMutability": "payable",
-      "type": "receive",
-      "payable": true
+      "type": "receive"
     },
     {
       "inputs": [
@@ -531,8 +517,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -551,8 +536,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -571,8 +555,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -591,8 +574,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -611,8 +593,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -631,8 +612,7 @@
         }
       ],
       "stateMutability": "view",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -671,8 +651,7 @@
         }
       ],
       "stateMutability": "pure",
-      "type": "function",
-      "constant": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -782,8 +761,7 @@
       "name": "execute",
       "outputs": [],
       "stateMutability": "payable",
-      "type": "function",
-      "payable": true
+      "type": "function"
     },
     {
       "inputs": [
@@ -812,9 +790,9 @@
       "type": "function"
     }
   ],
-  "metadata": "{\"compiler\":{\"version\":\"0.8.10+commit.fc410830\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"},{\"internalType\":\"address[]\",\"name\":\"proposers\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"confirmers\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"executors\",\"type\":\"address[]\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"Cancelled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"Confirmation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"MinDelayChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"RequirementChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"Revocation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"previousAdminRole\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"newAdminRole\",\"type\":\"bytes32\"}],\"name\":\"RoleAdminChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleGranted\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleRevoked\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"ScheduleAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"ScheduleExecuted\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"CONFIRM_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"DEFAULT_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"EXECUTOR_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"PROPOSER_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"TIMELOCK_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"cancel\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"}],\"name\":\"changeDelay\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"}],\"name\":\"changeRequirement\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"confirmTransaction\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"confirmations\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"execute\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleAdmin\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"getRoleMember\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleMemberCount\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"getTimestamp\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"grantRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"hasRole\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperation\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isConfirmed\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperation\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationDone\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"done\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationPending\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationReady\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"minDelay\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"renounceRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"required\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"revokeConfirmation\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"revokeRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"schedule\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"events\":{\"Cancelled(bytes32)\":{\"details\":\"Emitted when operation `id` is cancelled.\"},\"MinDelayChange(uint256,uint256)\":{\"details\":\"Emitted when the minimum delay for future operations is modified.\"},\"RequirementChange(uint256,uint256)\":{\"details\":\"Emitted when the number of required confimations is modified.\"},\"ScheduleAdded(bytes32)\":{\"details\":\"Emitted when a call is scheduled as part of operation `id`.\"},\"ScheduleExecuted(bytes32)\":{\"details\":\"Emitted when a call is performed as part of operation `id`.\"}},\"kind\":\"dev\",\"methods\":{\"cancel(bytes32)\":{\"details\":\"Cancel an operation. Requirements: - the caller must have the 'proposer' role.\"},\"changeDelay(uint256)\":{\"details\":\"Changes the minimum wallet duration for future operations. Emits a {MinDelayChange} event. Requirements: - the caller must be the wallet itself. This can only be achieved by scheduling and later executing an operation where the wallet is the target and the data is the ABI-encoded call to this function.\"},\"changeRequirement(uint256)\":{\"details\":\"Allows to change the number of required confirmations. Transaction has to be sent by wallet.\",\"params\":{\"_required\":\"Number of required confirmations.\"}},\"confirmTransaction(bytes32[])\":{\"details\":\"Allows an executor to confirm multiple transactions.\"},\"constructor\":{\"details\":\"Initializes the contract with a given `minDelay`.\"},\"execute(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a batch of transactions. Emits one {CallExecuted} event per transaction in the batch. Requirements: - the caller must have the 'executor' role.\"},\"getRoleAdmin(bytes32)\":{\"details\":\"Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.\"},\"getRoleMember(bytes32,uint256)\":{\"details\":\"Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.\"},\"getRoleMemberCount(bytes32)\":{\"details\":\"Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.\"},\"getTimestamp(bytes32)\":{\"details\":\"Returns the timestamp at with an operation becomes ready (0 for unset operations, 1 for done operations).\"},\"grantRole(bytes32,address)\":{\"details\":\"Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have ``role``'s admin role.\"},\"hasRole(bytes32,address)\":{\"details\":\"Returns `true` if `account` has been granted `role`.\"},\"hashOperation(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a batch of transactions.\"},\"isOperation(bytes32)\":{\"details\":\"Returns whether an id correspond to a registered operation. This includes both Pending, Ready and Done operations.\"},\"isOperationDone(bytes32)\":{\"details\":\"Returns whether an operation is done or not.\"},\"isOperationPending(bytes32)\":{\"details\":\"Returns whether an operation is pending or not.\"},\"isOperationReady(bytes32)\":{\"details\":\"Returns whether an operation is ready or not.\"},\"renounceRole(bytes32,address)\":{\"details\":\"Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been revoked `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.\"},\"revokeConfirmation(bytes32[])\":{\"details\":\"Allows an executor to revoke multiple confirmations for a transaction.\"},\"revokeRole(bytes32,address)\":{\"details\":\"Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have ``role``'s admin role.\"},\"schedule(address[],uint256[],bytes[],bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a batch of transactions. Emits one {ScheduleAdded} event per transaction in the batch. Requirements: - the caller must have the 'proposer' role.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"notice\":\"MultiSigWallet with timelocker\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/core/BEMultiSigWallet.sol\":\"BEMultiSigWallet\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/access/AccessControl.sol\":{\"keccak256\":\"0x4a1a0ba12bf1a33f10d9fe226278cf59675c0b929d29e4da99658a079b27fb84\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bda1319db846d6d6f92d8a57a9bdee8bde1dc39aa7546165791692c24dd6f30a\",\"dweb:/ipfs/Qma5oZ7DmbdAjd8mpiW7mx896PDtwsQtCQ2hj9Upf7b7JK\"]},\"@openzeppelin/contracts/access/AccessControlEnumerable.sol\":{\"keccak256\":\"0x13f5e15f2a0650c0b6aaee2ef19e89eaf4870d6e79662d572a393334c1397247\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://7ee05f28f549a5d6515e152580716b87636ed4bfab9812499a6e3803df88288b\",\"dweb:/ipfs/QmeEnhdwY1t5Y3YU5a4ffzgXuToydH2PNdNxV9W7dEPRQJ\"]},\"@openzeppelin/contracts/access/IAccessControl.sol\":{\"keccak256\":\"0x59ce320a585d7e1f163cd70390a0ef2ff9cec832e2aa544293a00692465a7a57\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bb2c137c343ef0c4c7ce7b18c1d108afdc9d315a04e48307288d2d05adcbde3a\",\"dweb:/ipfs/QmUxhrAQM3MM3FF5j7AtcXLXguWCJBHJ14BRdVtuoQc8Fh\"]},\"@openzeppelin/contracts/access/IAccessControlEnumerable.sol\":{\"keccak256\":\"0xba4459ab871dfa300f5212c6c30178b63898c03533a1ede28436f11546626676\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3dcc7b09bfa6e18aab262ca372f4a9b1fc82e294b430706a4e1378cf58e6a276\",\"dweb:/ipfs/QmT8oSAcesdctR15HMLhr2a1HRpXymxdjTfdtfTYJcj2N2\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xe2e337e6dde9ef6b680e07338c493ebea1b5fd09b43424112868e9cc1706bca7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6df0ddf21ce9f58271bdfaa85cde98b200ef242a05a3f85c2bc10a8294800a92\",\"dweb:/ipfs/QmRK2Y5Yc6BK7tGKkgsgn3aJEQGi5aakeSPZvS65PV8Xp3\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x32c202bd28995dd20c4347b7c6467a6d3241c74c8ad3edcbb610cd9205916c45\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8179c356adb19e70d6b31a1eedc8c5c7f0c00e669e2540f4099e3844c6074d30\",\"dweb:/ipfs/QmWFbivarEobbqhS1go64ootVuHfVohBseerYy9FTEd1W2\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0xd10975de010d89fd1c78dc5e8a9a7e7f496198085c151648f20cba166b32582b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fb0048dee081f6fffa5f74afc3fb328483c2a30504e94a0ddd2a5114d731ec4d\",\"dweb:/ipfs/QmZptt1nmYoA5SgjwnSgWqgUSDgm4q52Yos3xhnMv3MV43\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x447a5f3ddc18419d41ff92b3773fb86471b1db25773e07f877f548918a185bf1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://be161e54f24e5c6fae81a12db1a8ae87bc5ae1b0ddc805d82a1440a68455088f\",\"dweb:/ipfs/QmP7C3CHdY9urF4dEMb9wmsp1wMxHF6nhA2yQE5SKiPAdy\"]},\"@openzeppelin/contracts/utils/structs/EnumerableSet.sol\":{\"keccak256\":\"0x9772845c886f87a3aab315f8d6b68aa599027c20f441b131cd4afaf65b588900\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ad2f29a9c17a4f746416c9e254e17671f43c409dbfa6e4d7d76c3e4a83212d31\",\"dweb:/ipfs/QmTqU65L6iu6yqmXKzcNLPioR8etzKPWycpDJCm17ifVdS\"]},\"project:/contracts/core/BEMultiSigWallet.sol\":{\"keccak256\":\"0x2fc77b3ec110d7bfbc59236f80c6584290b08c446fcb0897a5fd8f683a513d51\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6f57f605ae9513f006d1fa9e0051d6074296f8913410b1bfea160798cc128584\",\"dweb:/ipfs/QmSzfz6vLB8kNRw2cJ5XHynM9Bac9K7d5Jkn3yu2N8LtoR\"]}},\"version\":1}",
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"{\"compiler\":{\"version\":\"0.8.10+commit.fc410830\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"},{\"internalType\":\"address[]\",\"name\":\"proposers\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"confirmers\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"executors\",\"type\":\"address[]\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"Cancelled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"Confirmation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"MinDelayChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"RequirementChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"Revocation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"previousAdminRole\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"newAdminRole\",\"type\":\"bytes32\"}],\"name\":\"RoleAdminChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleGranted\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleRevoked\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"ScheduleAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"ScheduleExecuted\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"CONFIRM_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"DEFAULT_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"EXECUTOR_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"PROPOSER_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"TIMELOCK_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"cancel\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"}],\"name\":\"changeDelay\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"}],\"name\":\"changeRequirement\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"confirmTransaction\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"confirmations\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"execute\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleAdmin\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"getRoleMember\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleMemberCount\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"getTimestamp\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"grantRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"hasRole\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperation\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isConfirmed\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperation\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationDone\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"done\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationPending\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationReady\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"minDelay\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"renounceRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"required\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"revokeConfirmation\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"revokeRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"schedule\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"events\":{\"Cancelled(bytes32)\":{\"details\":\"Emitted when operation `id` is cancelled.\"},\"MinDelayChange(uint256,uint256)\":{\"details\":\"Emitted when the minimum delay for future operations is modified.\"},\"RequirementChange(uint256,uint256)\":{\"details\":\"Emitted when the number of required confimations is modified.\"},\"ScheduleAdded(bytes32)\":{\"details\":\"Emitted when a call is scheduled as part of operation `id`.\"},\"ScheduleExecuted(bytes32)\":{\"details\":\"Emitted when a call is performed as part of operation `id`.\"}},\"kind\":\"dev\",\"methods\":{\"cancel(bytes32)\":{\"details\":\"Cancel an operation. Requirements: - the caller must have the 'proposer' role.\"},\"changeDelay(uint256)\":{\"details\":\"Changes the minimum wallet duration for future operations. Emits a {MinDelayChange} event. Requirements: - the caller must be the wallet itself. This can only be achieved by scheduling and later executing an operation where the wallet is the target and the data is the ABI-encoded call to this function.\"},\"changeRequirement(uint256)\":{\"details\":\"Allows to change the number of required confirmations. Transaction has to be sent by wallet.\",\"params\":{\"_required\":\"Number of required confirmations.\"}},\"confirmTransaction(bytes32[])\":{\"details\":\"Allows an executor to confirm multiple transactions.\"},\"constructor\":{\"details\":\"Initializes the contract with a given `minDelay`.\"},\"execute(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a batch of transactions. Emits one {CallExecuted} event per transaction in the batch. Requirements: - the caller must have the 'executor' role.\"},\"getRoleAdmin(bytes32)\":{\"details\":\"Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.\"},\"getRoleMember(bytes32,uint256)\":{\"details\":\"Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.\"},\"getRoleMemberCount(bytes32)\":{\"details\":\"Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.\"},\"getTimestamp(bytes32)\":{\"details\":\"Returns the timestamp at with an operation becomes ready (0 for unset operations, 1 for done operations).\"},\"grantRole(bytes32,address)\":{\"details\":\"Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have ``role``'s admin role.\"},\"hasRole(bytes32,address)\":{\"details\":\"Returns `true` if `account` has been granted `role`.\"},\"hashOperation(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a batch of transactions.\"},\"isConfirmed(bytes32)\":{\"details\":\"Returns whether an operation is confirmed or not.\"},\"isOperation(bytes32)\":{\"details\":\"Returns whether an id correspond to a registered operation. This includes both Pending, Ready and Done operations.\"},\"isOperationDone(bytes32)\":{\"details\":\"Returns whether an operation is done or not.\"},\"isOperationPending(bytes32)\":{\"details\":\"Returns whether an operation is pending or not.\"},\"isOperationReady(bytes32)\":{\"details\":\"Returns whether an operation is ready or not.\"},\"renounceRole(bytes32,address)\":{\"details\":\"Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been revoked `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.\"},\"revokeConfirmation(bytes32[])\":{\"details\":\"Allows an executor to revoke multiple confirmations for a transaction.\"},\"revokeRole(bytes32,address)\":{\"details\":\"Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have ``role``'s admin role.\"},\"schedule(address[],uint256[],bytes[],bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a batch of transactions. Emits one {ScheduleAdded} event per transaction in the batch. Requirements: - the caller must have the 'proposer' role.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"notice\":\"MultiSigWallet with timelocker\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/core/BEMultiSigWallet.sol\":\"BEMultiSigWallet\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/access/AccessControl.sol\":{\"keccak256\":\"0x4a1a0ba12bf1a33f10d9fe226278cf59675c0b929d29e4da99658a079b27fb84\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bda1319db846d6d6f92d8a57a9bdee8bde1dc39aa7546165791692c24dd6f30a\",\"dweb:/ipfs/Qma5oZ7DmbdAjd8mpiW7mx896PDtwsQtCQ2hj9Upf7b7JK\"]},\"@openzeppelin/contracts/access/AccessControlEnumerable.sol\":{\"keccak256\":\"0x13f5e15f2a0650c0b6aaee2ef19e89eaf4870d6e79662d572a393334c1397247\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://7ee05f28f549a5d6515e152580716b87636ed4bfab9812499a6e3803df88288b\",\"dweb:/ipfs/QmeEnhdwY1t5Y3YU5a4ffzgXuToydH2PNdNxV9W7dEPRQJ\"]},\"@openzeppelin/contracts/access/IAccessControl.sol\":{\"keccak256\":\"0x59ce320a585d7e1f163cd70390a0ef2ff9cec832e2aa544293a00692465a7a57\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bb2c137c343ef0c4c7ce7b18c1d108afdc9d315a04e48307288d2d05adcbde3a\",\"dweb:/ipfs/QmUxhrAQM3MM3FF5j7AtcXLXguWCJBHJ14BRdVtuoQc8Fh\"]},\"@openzeppelin/contracts/access/IAccessControlEnumerable.sol\":{\"keccak256\":\"0xba4459ab871dfa300f5212c6c30178b63898c03533a1ede28436f11546626676\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3dcc7b09bfa6e18aab262ca372f4a9b1fc82e294b430706a4e1378cf58e6a276\",\"dweb:/ipfs/QmT8oSAcesdctR15HMLhr2a1HRpXymxdjTfdtfTYJcj2N2\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xe2e337e6dde9ef6b680e07338c493ebea1b5fd09b43424112868e9cc1706bca7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6df0ddf21ce9f58271bdfaa85cde98b200ef242a05a3f85c2bc10a8294800a92\",\"dweb:/ipfs/QmRK2Y5Yc6BK7tGKkgsgn3aJEQGi5aakeSPZvS65PV8Xp3\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x32c202bd28995dd20c4347b7c6467a6d3241c74c8ad3edcbb610cd9205916c45\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8179c356adb19e70d6b31a1eedc8c5c7f0c00e669e2540f4099e3844c6074d30\",\"dweb:/ipfs/QmWFbivarEobbqhS1go64ootVuHfVohBseerYy9FTEd1W2\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0xd10975de010d89fd1c78dc5e8a9a7e7f496198085c151648f20cba166b32582b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fb0048dee081f6fffa5f74afc3fb328483c2a30504e94a0ddd2a5114d731ec4d\",\"dweb:/ipfs/QmZptt1nmYoA5SgjwnSgWqgUSDgm4q52Yos3xhnMv3MV43\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x447a5f3ddc18419d41ff92b3773fb86471b1db25773e07f877f548918a185bf1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://be161e54f24e5c6fae81a12db1a8ae87bc5ae1b0ddc805d82a1440a68455088f\",\"dweb:/ipfs/QmP7C3CHdY9urF4dEMb9wmsp1wMxHF6nhA2yQE5SKiPAdy\"]},\"@openzeppelin/contracts/utils/structs/EnumerableSet.sol\":{\"keccak256\":\"0x9772845c886f87a3aab315f8d6b68aa599027c20f441b131cd4afaf65b588900\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ad2f29a9c17a4f746416c9e254e17671f43c409dbfa6e4d7d76c3e4a83212d31\",\"dweb:/ipfs/QmTqU65L6iu6yqmXKzcNLPioR8etzKPWycpDJCm17ifVdS\"]},\"project:/contracts/core/BEMultiSigWallet.sol\":{\"keccak256\":\"0x534c437f18bac67f0c99a400adda2729a68dff3cd247ee9cc1f8abacf984ffcf\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://f166336ad716d6af251f1c6f764a049925228843f0090bc59cfe768ee84e9afe\",\"dweb:/ipfs/QmNiA9aNKaVeB685YgchgQ6iiE2kJR7inFpodLkfGXivjY\"]}},\"version\":1}",
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@@ -22322,9 +22300,9 @@
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-  "source": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.10;\nimport \"@openzeppelin/contracts/access/AccessControlEnumerable.sol\";\n\n/**\n * MultiSigWallet with timelocker\n */\ncontract BEMultiSigWallet is AccessControlEnumerable {\n  bytes32 public constant TIMELOCK_ADMIN_ROLE =\n    keccak256(\"TIMELOCK_ADMIN_ROLE\");\n  bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n  bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n  bytes32 public constant CONFIRM_ROLE = keccak256(\"CONFIRM_ROLE\");\n  uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n  mapping(bytes32 => uint256) private _timestamps;\n  mapping(bytes32 => mapping(address => bool)) public confirmations;\n  uint256 public minDelay;\n  uint256 public required;\n\n  /**\n   * @dev Emitted when a call is scheduled as part of operation `id`.\n   */\n  event ScheduleAdded(bytes32 indexed id);\n\n  /**\n   * @dev Emitted when a call is performed as part of operation `id`.\n   */\n  event ScheduleExecuted(bytes32 indexed id);\n\n  /**\n   * @dev Emitted when operation `id` is cancelled.\n   */\n  event Cancelled(bytes32 indexed id);\n\n  event Confirmation(address indexed sender, bytes32[] ids);\n\n  event Revocation(address indexed sender, bytes32[] ids);\n\n  /**\n   * @dev Emitted when the minimum delay for future operations is modified.\n   */\n  event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n  /**\n   * @dev Emitted when the number of required confimations is modified.\n   */\n  event RequirementChange(uint256 oldDuration, uint256 newDuration);\n\n  modifier onlyWallet() {\n    require(\n      msg.sender == address(this),\n      \"BEMultiSigWallet: caller must be wallet\"\n    );\n    _;\n  }\n\n  /**\n   * @dev Initializes the contract with a given `minDelay`.\n   */\n  constructor(\n    uint256 _minDelay,\n    uint256 _required,\n    address[] memory proposers,\n    address[] memory confirmers,\n    address[] memory executors\n  ) {\n    _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(CONFIRM_ROLE, TIMELOCK_ADMIN_ROLE);\n\n    // deployer + self administration\n    _setupRole(TIMELOCK_ADMIN_ROLE, _msgSender());\n    _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n    // register proposers\n    for (uint256 i = 0; i < proposers.length; ++i) {\n      _setupRole(PROPOSER_ROLE, proposers[i]);\n    }\n\n    // register confirmers\n    for (uint256 i = 0; i < confirmers.length; ++i) {\n      _setupRole(CONFIRM_ROLE, confirmers[i]);\n    }\n\n    // register executors\n    for (uint256 i = 0; i < executors.length; ++i) {\n      _setupRole(EXECUTOR_ROLE, executors[i]);\n    }\n\n    minDelay = _minDelay;\n    emit MinDelayChange(0, minDelay);\n    required = _required;\n    emit RequirementChange(0, required);\n  }\n\n  /**\n   * @dev Modifier to make a function callable only by a certain role. In\n   * addition to checking the sender's role, `address(0)` 's role is also\n   * considered. Granting a role to `address(0)` is equivalent to enabling\n   * this role for everyone.\n   */\n  modifier onlyRoleOrOpenRole(bytes32 role) {\n    if (!hasRole(role, address(0))) {\n      _checkRole(role, _msgSender());\n    }\n    _;\n  }\n\n  /**\n   * @dev Contract might receive/hold ETH as part of the maintenance process.\n   */\n  receive() external payable {}\n\n  /**\n   * @dev Returns whether an id correspond to a registered operation. This\n   * includes both Pending, Ready and Done operations.\n   */\n  function isOperation(bytes32 id) public view virtual returns (bool pending) {\n    return getTimestamp(id) > 0;\n  }\n\n  /**\n   * @dev Returns whether an operation is pending or not.\n   */\n  function isOperationPending(\n    bytes32 id\n  ) public view virtual returns (bool pending) {\n    return getTimestamp(id) > _DONE_TIMESTAMP;\n  }\n\n  function isConfirmed(bytes32 id) public view returns (bool ready) {\n    uint256 count = 0;\n    uint256 executorCount = getRoleMemberCount(EXECUTOR_ROLE);\n    for (uint256 i = 0; i < executorCount; i++) {\n      if (confirmations[id][getRoleMember(EXECUTOR_ROLE, i)]) count += 1;\n      if (count == required) return true;\n    }\n  }\n\n  /**\n   * @dev Returns whether an operation is ready or not.\n   */\n  function isOperationReady(\n    bytes32 id\n  ) public view virtual returns (bool ready) {\n    uint256 timestamp = getTimestamp(id);\n    return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n  }\n\n  /**\n   * @dev Returns whether an operation is done or not.\n   */\n  function isOperationDone(bytes32 id) public view virtual returns (bool done) {\n    return getTimestamp(id) == _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Returns the timestamp at with an operation becomes ready (0 for\n   * unset operations, 1 for done operations).\n   */\n  function getTimestamp(\n    bytes32 id\n  ) public view virtual returns (uint256 timestamp) {\n    return _timestamps[id];\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a batch of\n   * transactions.\n   */\n  function hashOperation(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(targets, values, datas, predecessor, salt));\n  }\n\n  /**\n   * @dev Schedule an operation containing a batch of transactions.\n   *\n   * Emits one {ScheduleAdded} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function schedule(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) public virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperation(targets, values, datas, predecessor, salt);\n    _schedule(id, delay);\n    emit ScheduleAdded(id);\n  }\n\n  /**\n   * @dev Schedule an operation that is to becomes valid after a given delay.\n   */\n  function _schedule(bytes32 id, uint256 delay) private {\n    require(!isOperation(id), \"BEMultiSigWallet: operation already scheduled\");\n    require(delay >= minDelay, \"BEMultiSigWallet: insufficient delay\");\n    _timestamps[id] = block.timestamp + delay;\n  }\n\n  /**\n   * @dev Cancel an operation.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function cancel(bytes32 id) public virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation cannot be cancelled\"\n    );\n    delete _timestamps[id];\n\n    emit Cancelled(id);\n  }\n\n  /**\n   *  @dev Allows an executor to confirm multiple transactions.\n   */\n  function confirmTransaction(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      require(\n        isOperationPending(ids[i]),\n        \"BEMultiSigWallet: operation not exist or finished\"\n      );\n      confirmations[ids[i]][msg.sender] = true;\n    }\n    emit Confirmation(msg.sender, ids);\n  }\n\n  /**\n   * @dev Allows an executor to revoke multiple confirmations for a transaction.\n   */\n  function revokeConfirmation(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      require(\n        isOperationPending(ids[i]),\n        \"BEMultiSigWallet: operation not exist or finished\"\n      );\n      confirmations[ids[i]][msg.sender] = false;\n    }\n    emit Revocation(msg.sender, ids);\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a batch of transactions.\n   *\n   * Emits one {CallExecuted} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function execute(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperation(targets, values, datas, predecessor, salt);\n    _beforeCall(id, predecessor);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      _call(targets[i], values[i], datas[i]);\n    }\n    _afterCall(id);\n    emit ScheduleExecuted(id);\n  }\n\n  /**\n   * @dev Checks before execution of an operation's calls.\n   */\n  function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    require(\n      isConfirmed(id),\n      \"BEMultiSigWallet: operation not reach required confirmations\"\n    );\n    require(\n      predecessor == bytes32(0) || isOperationDone(predecessor),\n      \"BEMultiSigWallet: missing dependency\"\n    );\n  }\n\n  /**\n   * @dev Checks after execution of an operation's calls.\n   */\n  function _afterCall(bytes32 id) private {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    _timestamps[id] = _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Execute an operation's call.\n   *\n   * Emits a {CallExecuted} event.\n   */\n  function _call(address target, uint256 value, bytes calldata data) private {\n    (bool success, ) = target.call{value: value}(data);\n    require(success, \"BEMultiSigWallet: underlying transaction reverted\");\n  }\n\n  /**\n   * @dev Changes the minimum wallet duration for future operations.\n   *\n   * Emits a {MinDelayChange} event.\n   *\n   * Requirements:\n   *\n   * - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n   * an operation where the wallet is the target and the data is the ABI-encoded call to this function.\n   */\n  function changeDelay(uint256 _minDelay) external virtual onlyWallet {\n    emit MinDelayChange(minDelay, _minDelay);\n    minDelay = _minDelay;\n  }\n\n  /**\n   * @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n   * @param _required Number of required confirmations.\n   */\n  function changeRequirement(uint256 _required) external virtual onlyWallet {\n    emit RequirementChange(required, _required);\n    required = _required;\n  }\n}\n",
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+  "source": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.10;\nimport \"@openzeppelin/contracts/access/AccessControlEnumerable.sol\";\n\n/**\n * MultiSigWallet with timelocker\n */\ncontract BEMultiSigWallet is AccessControlEnumerable {\n  bytes32 public constant TIMELOCK_ADMIN_ROLE =\n    keccak256(\"TIMELOCK_ADMIN_ROLE\");\n  bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n  bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n  bytes32 public constant CONFIRM_ROLE = keccak256(\"CONFIRM_ROLE\");\n  uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n  mapping(bytes32 => uint256) private _timestamps;\n  mapping(bytes32 => mapping(address => bool)) public confirmations;\n  uint256 public minDelay;\n  uint256 public required;\n\n  /**\n   * @dev Emitted when a call is scheduled as part of operation `id`.\n   */\n  event ScheduleAdded(bytes32 indexed id);\n\n  /**\n   * @dev Emitted when a call is performed as part of operation `id`.\n   */\n  event ScheduleExecuted(bytes32 indexed id);\n\n  /**\n   * @dev Emitted when operation `id` is cancelled.\n   */\n  event Cancelled(bytes32 indexed id);\n\n  event Confirmation(address indexed sender, bytes32[] ids);\n\n  event Revocation(address indexed sender, bytes32[] ids);\n\n  /**\n   * @dev Emitted when the minimum delay for future operations is modified.\n   */\n  event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n  /**\n   * @dev Emitted when the number of required confimations is modified.\n   */\n  event RequirementChange(uint256 oldDuration, uint256 newDuration);\n\n  modifier onlyWallet() {\n    require(\n      msg.sender == address(this),\n      \"BEMultiSigWallet: caller must be wallet\"\n    );\n    _;\n  }\n\n  /**\n   * @dev Initializes the contract with a given `minDelay`.\n   */\n  constructor(\n    uint256 _minDelay,\n    uint256 _required,\n    address[] memory proposers,\n    address[] memory confirmers,\n    address[] memory executors\n  ) {\n    _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(CONFIRM_ROLE, TIMELOCK_ADMIN_ROLE);\n\n    // deployer + self administration\n    _setupRole(TIMELOCK_ADMIN_ROLE, _msgSender());\n    _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n    // register proposers\n    for (uint256 i = 0; i < proposers.length; ++i) {\n      _setupRole(PROPOSER_ROLE, proposers[i]);\n    }\n\n    // register confirmers\n    for (uint256 i = 0; i < confirmers.length; ++i) {\n      _setupRole(CONFIRM_ROLE, confirmers[i]);\n    }\n\n    // register executors\n    for (uint256 i = 0; i < executors.length; ++i) {\n      _setupRole(EXECUTOR_ROLE, executors[i]);\n    }\n\n    minDelay = _minDelay;\n    emit MinDelayChange(0, minDelay);\n    required = _required;\n    emit RequirementChange(0, required);\n  }\n\n  /**\n   * @dev Modifier to make a function callable only by a certain role. In\n   * addition to checking the sender's role, `address(0)` 's role is also\n   * considered. Granting a role to `address(0)` is equivalent to enabling\n   * this role for everyone.\n   */\n  modifier onlyRoleOrOpenRole(bytes32 role) {\n    if (!hasRole(role, address(0))) {\n      _checkRole(role, _msgSender());\n    }\n    _;\n  }\n\n  /**\n   * @dev Contract might receive/hold ETH as part of the maintenance process.\n   */\n  receive() external payable {}\n\n  /**\n   * @dev Returns whether an id correspond to a registered operation. This\n   * includes both Pending, Ready and Done operations.\n   */\n  function isOperation(bytes32 id) public view virtual returns (bool pending) {\n    return getTimestamp(id) > 0;\n  }\n\n  /**\n   * @dev Returns whether an operation is pending or not.\n   */\n  function isOperationPending(\n    bytes32 id\n  ) public view virtual returns (bool pending) {\n    return getTimestamp(id) > _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Returns whether an operation is confirmed or not.\n   */\n  function isConfirmed(bytes32 id) public view returns (bool ready) {\n    uint256 count = 0;\n    uint256 confirmCount = getRoleMemberCount(CONFIRM_ROLE);\n    for (uint256 i = 0; i < confirmCount; i++) {\n      if (confirmations[id][getRoleMember(CONFIRM_ROLE, i)]) count += 1;\n      if (count == required) return true;\n    }\n  }\n\n  /**\n   * @dev Returns whether an operation is ready or not.\n   */\n  function isOperationReady(\n    bytes32 id\n  ) public view virtual returns (bool ready) {\n    uint256 timestamp = getTimestamp(id);\n    return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n  }\n\n  /**\n   * @dev Returns whether an operation is done or not.\n   */\n  function isOperationDone(bytes32 id) public view virtual returns (bool done) {\n    return getTimestamp(id) == _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Returns the timestamp at with an operation becomes ready (0 for\n   * unset operations, 1 for done operations).\n   */\n  function getTimestamp(\n    bytes32 id\n  ) public view virtual returns (uint256 timestamp) {\n    return _timestamps[id];\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a batch of\n   * transactions.\n   */\n  function hashOperation(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(targets, values, datas, predecessor, salt));\n  }\n\n  /**\n   * @dev Schedule an operation containing a batch of transactions.\n   *\n   * Emits one {ScheduleAdded} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function schedule(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) external virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperation(targets, values, datas, predecessor, salt);\n    _schedule(id, delay);\n    emit ScheduleAdded(id);\n  }\n\n  /**\n   * @dev Schedule an operation that is to becomes valid after a given delay.\n   */\n  function _schedule(bytes32 id, uint256 delay) private {\n    require(!isOperation(id), \"BEMultiSigWallet: operation already scheduled\");\n    require(delay >= minDelay, \"BEMultiSigWallet: insufficient delay\");\n    _timestamps[id] = block.timestamp + delay;\n  }\n\n  /**\n   * @dev Cancel an operation.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function cancel(\n    bytes32 id\n  ) external virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation cannot be cancelled\"\n    );\n    delete _timestamps[id];\n\n    emit Cancelled(id);\n  }\n\n  /**\n   *  @dev Allows an executor to confirm multiple transactions.\n   */\n  function confirmTransaction(\n    bytes32[] calldata ids\n  ) external onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      require(\n        isOperationPending(ids[i]),\n        \"BEMultiSigWallet: operation not exist or finished\"\n      );\n      confirmations[ids[i]][msg.sender] = true;\n    }\n    emit Confirmation(msg.sender, ids);\n  }\n\n  /**\n   * @dev Allows an executor to revoke multiple confirmations for a transaction.\n   */\n  function revokeConfirmation(\n    bytes32[] calldata ids\n  ) external onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      require(\n        isOperationPending(ids[i]),\n        \"BEMultiSigWallet: operation not exist or finished\"\n      );\n      confirmations[ids[i]][msg.sender] = false;\n    }\n    emit Revocation(msg.sender, ids);\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a batch of transactions.\n   *\n   * Emits one {CallExecuted} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function execute(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) external payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperation(targets, values, datas, predecessor, salt);\n    _beforeCall(id, predecessor);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      _call(targets[i], values[i], datas[i]);\n    }\n    _afterCall(id);\n    emit ScheduleExecuted(id);\n  }\n\n  /**\n   * @dev Checks before execution of an operation's calls.\n   */\n  function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    require(\n      isConfirmed(id),\n      \"BEMultiSigWallet: operation not reach required confirmations\"\n    );\n    require(\n      predecessor == bytes32(0) || isOperationDone(predecessor),\n      \"BEMultiSigWallet: missing dependency\"\n    );\n  }\n\n  /**\n   * @dev Checks after execution of an operation's calls.\n   */\n  function _afterCall(bytes32 id) private {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    _timestamps[id] = _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Execute an operation's call.\n   *\n   * Emits a {CallExecuted} event.\n   */\n  function _call(address target, uint256 value, bytes calldata data) private {\n    (bool success, ) = target.call{value: value}(data);\n    require(success, \"BEMultiSigWallet: underlying transaction reverted\");\n  }\n\n  /**\n   * @dev Changes the minimum wallet duration for future operations.\n   *\n   * Emits a {MinDelayChange} event.\n   *\n   * Requirements:\n   *\n   * - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n   * an operation where the wallet is the target and the data is the ABI-encoded call to this function.\n   */\n  function changeDelay(uint256 _minDelay) external virtual onlyWallet {\n    emit MinDelayChange(minDelay, _minDelay);\n    minDelay = _minDelay;\n  }\n\n  /**\n   * @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n   * @param _required Number of required confirmations.\n   */\n  function changeRequirement(uint256 _required) external virtual onlyWallet {\n    emit RequirementChange(required, _required);\n    required = _required;\n  }\n}\n",
   "sourcePath": "/Users/zhl/Documents/workspace/crypto/becrypto/contracts/core/BEMultiSigWallet.sol",
   "ast": {
     "absolutePath": "project:/contracts/core/BEMultiSigWallet.sol",
@@ -22336,7 +22314,7 @@
         433
       ],
       "BEMultiSigWallet": [
-        2240
+        2241
       ],
       "Context": [
         553
@@ -22360,7 +22338,7 @@
         756
       ]
     },
-    "id": 2241,
+    "id": 2242,
     "license": "MIT",
     "nodeType": "SourceUnit",
     "nodes": [
@@ -22380,7 +22358,7 @@
         "id": 1394,
         "nameLocation": "-1:-1:-1",
         "nodeType": "ImportDirective",
-        "scope": 2241,
+        "scope": 2242,
         "sourceUnit": 434,
         "src": "56:68:9",
         "symbolAliases": [],
@@ -22412,9 +22390,9 @@
           "text": " MultiSigWallet with timelocker"
         },
         "fullyImplemented": true,
-        "id": 2240,
+        "id": 2241,
         "linearizedBaseContracts": [
-          2240,
+          2241,
           433,
           308,
           780,
@@ -22435,7 +22413,7 @@
             "name": "TIMELOCK_ADMIN_ROLE",
             "nameLocation": "249:19:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "225:82:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22515,7 +22493,7 @@
             "name": "PROPOSER_ROLE",
             "nameLocation": "335:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "311:66:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22595,7 +22573,7 @@
             "name": "EXECUTOR_ROLE",
             "nameLocation": "405:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "381:66:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22675,7 +22653,7 @@
             "name": "CONFIRM_ROLE",
             "nameLocation": "475:12:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "451:64:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22754,7 +22732,7 @@
             "name": "_DONE_TIMESTAMP",
             "nameLocation": "545:15:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "519:54:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22841,7 +22819,7 @@
             "name": "_timestamps",
             "nameLocation": "614:11:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "578:47:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22888,7 +22866,7 @@
             "name": "confirmations",
             "nameLocation": "681:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "629:65:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22954,7 +22932,7 @@
             "name": "minDelay",
             "nameLocation": "713:8:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "698:23:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -22982,7 +22960,7 @@
             "name": "required",
             "nameLocation": "740:8:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2240,
+            "scope": 2241,
             "src": "725:23:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -23522,7 +23500,7 @@
                               "referencedDeclaration": 4294967268,
                               "src": "1607:4:9",
                               "typeDescriptions": {
-                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2240",
+                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2241",
                                 "typeString": "contract BEMultiSigWallet"
                               }
                             }
@@ -23530,7 +23508,7 @@
                           "expression": {
                             "argumentTypes": [
                               {
-                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2240",
+                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2241",
                                 "typeString": "contract BEMultiSigWallet"
                               }
                             ],
@@ -24050,7 +24028,7 @@
                             "referencedDeclaration": 4294967268,
                             "src": "2275:4:9",
                             "typeDescriptions": {
-                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2240",
+                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2241",
                               "typeString": "contract BEMultiSigWallet"
                             }
                           }
@@ -24058,7 +24036,7 @@
                         "expression": {
                           "argumentTypes": [
                             {
-                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2240",
+                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2241",
                               "typeString": "contract BEMultiSigWallet"
                             }
                           ],
@@ -25304,7 +25282,7 @@
               "parameters": [],
               "src": "1914:0:9"
             },
-            "scope": 2240,
+            "scope": 2241,
             "src": "1755:1064:9",
             "stateMutability": "nonpayable",
             "virtual": false,
@@ -25629,7 +25607,7 @@
               "parameters": [],
               "src": "3344:0:9"
             },
-            "scope": 2240,
+            "scope": 2241,
             "src": "3317:29:9",
             "stateMutability": "payable",
             "virtual": false,
@@ -25678,7 +25656,7 @@
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1784,
+                        "referencedDeclaration": 1785,
                         "src": "3581:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
@@ -25813,7 +25791,7 @@
               ],
               "src": "3553:14:9"
             },
-            "scope": 2240,
+            "scope": 2241,
             "src": "3492:114:9",
             "stateMutability": "view",
             "virtual": true,
@@ -25862,7 +25840,7 @@
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1784,
+                        "referencedDeclaration": 1785,
                         "src": "3784:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
@@ -25993,7 +25971,7 @@
               ],
               "src": "3756:14:9"
             },
-            "scope": 2240,
+            "scope": 2241,
             "src": "3680:143:9",
             "stateMutability": "view",
             "virtual": true,
@@ -26001,24 +25979,24 @@
           },
           {
             "body": {
-              "id": 1731,
+              "id": 1732,
               "nodeType": "Block",
-              "src": "3893:263:9",
+              "src": "3965:259:9",
               "statements": [
                 {
                   "assignments": [
-                    1691
+                    1692
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1691,
+                      "id": 1692,
                       "mutability": "mutable",
                       "name": "count",
-                      "nameLocation": "3907:5:9",
+                      "nameLocation": "3979:5:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1731,
-                      "src": "3899:13:9",
+                      "scope": 1732,
+                      "src": "3971:13:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -26026,10 +26004,10 @@
                         "typeString": "uint256"
                       },
                       "typeName": {
-                        "id": 1690,
+                        "id": 1691,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
-                        "src": "3899:7:9",
+                        "src": "3971:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26038,17 +26016,17 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1693,
+                  "id": 1694,
                   "initialValue": {
                     "hexValue": "30",
-                    "id": 1692,
+                    "id": 1693,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": true,
                     "kind": "number",
                     "lValueRequested": false,
                     "nodeType": "Literal",
-                    "src": "3915:1:9",
+                    "src": "3987:1:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_rational_0_by_1",
                       "typeString": "int_const 0"
@@ -26056,22 +26034,22 @@
                     "value": "0"
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "3899:17:9"
+                  "src": "3971:17:9"
                 },
                 {
                   "assignments": [
-                    1695
+                    1696
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1695,
+                      "id": 1696,
                       "mutability": "mutable",
-                      "name": "executorCount",
-                      "nameLocation": "3930:13:9",
+                      "name": "confirmCount",
+                      "nameLocation": "4002:12:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1731,
-                      "src": "3922:21:9",
+                      "scope": 1732,
+                      "src": "3994:20:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -26079,10 +26057,10 @@
                         "typeString": "uint256"
                       },
                       "typeName": {
-                        "id": 1694,
+                        "id": 1695,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
-                        "src": "3922:7:9",
+                        "src": "3994:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26091,16 +26069,16 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1699,
+                  "id": 1700,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 1697,
-                        "name": "EXECUTOR_ROLE",
+                        "id": 1698,
+                        "name": "CONFIRM_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1412,
-                        "src": "3965:13:9",
+                        "referencedDeclaration": 1417,
+                        "src": "4036:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -26114,18 +26092,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 1696,
+                      "id": 1697,
                       "name": "getRoleMemberCount",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 384,
-                      "src": "3946:18:9",
+                      "src": "4017:18:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                         "typeString": "function (bytes32) view returns (uint256)"
                       }
                     },
-                    "id": 1698,
+                    "id": 1699,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -26133,7 +26111,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "3946:33:9",
+                    "src": "4017:32:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
@@ -26141,37 +26119,37 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "3922:57:9"
+                  "src": "3994:55:9"
                 },
                 {
                   "body": {
-                    "id": 1729,
+                    "id": 1730,
                     "nodeType": "Block",
-                    "src": "4029:123:9",
+                    "src": "4098:122:9",
                     "statements": [
                       {
                         "condition": {
                           "baseExpression": {
                             "baseExpression": {
-                              "id": 1710,
+                              "id": 1711,
                               "name": "confirmations",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
                               "referencedDeclaration": 1433,
-                              "src": "4041:13:9",
+                              "src": "4110:13:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_mapping$_t_bytes32_$_t_mapping$_t_address_$_t_bool_$_$",
                                 "typeString": "mapping(bytes32 => mapping(address => bool))"
                               }
                             },
-                            "id": 1712,
+                            "id": 1713,
                             "indexExpression": {
-                              "id": 1711,
+                              "id": 1712,
                               "name": "id",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1685,
-                              "src": "4055:2:9",
+                              "referencedDeclaration": 1686,
+                              "src": "4124:2:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -26182,34 +26160,34 @@
                             "isPure": false,
                             "lValueRequested": false,
                             "nodeType": "IndexAccess",
-                            "src": "4041:17:9",
+                            "src": "4110:17:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_mapping$_t_address_$_t_bool_$",
                               "typeString": "mapping(address => bool)"
                             }
                           },
-                          "id": 1717,
+                          "id": 1718,
                           "indexExpression": {
                             "arguments": [
                               {
-                                "id": 1714,
-                                "name": "EXECUTOR_ROLE",
+                                "id": 1715,
+                                "name": "CONFIRM_ROLE",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 1412,
-                                "src": "4073:13:9",
+                                "referencedDeclaration": 1417,
+                                "src": "4142:12:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_bytes32",
                                   "typeString": "bytes32"
                                 }
                               },
                               {
-                                "id": 1715,
+                                "id": 1716,
                                 "name": "i",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 1701,
-                                "src": "4088:1:9",
+                                "referencedDeclaration": 1702,
+                                "src": "4156:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -26227,18 +26205,18 @@
                                   "typeString": "uint256"
                                 }
                               ],
-                              "id": 1713,
+                              "id": 1714,
                               "name": "getRoleMember",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
                               "referencedDeclaration": 368,
-                              "src": "4059:13:9",
+                              "src": "4128:13:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_uint256_$returns$_t_address_$",
                                 "typeString": "function (bytes32,uint256) view returns (address)"
                               }
                             },
-                            "id": 1716,
+                            "id": 1717,
                             "isConstant": false,
                             "isLValue": false,
                             "isPure": false,
@@ -26246,7 +26224,7 @@
                             "lValueRequested": false,
                             "names": [],
                             "nodeType": "FunctionCall",
-                            "src": "4059:31:9",
+                            "src": "4128:30:9",
                             "tryCall": false,
                             "typeDescriptions": {
                               "typeIdentifier": "t_address",
@@ -26258,29 +26236,29 @@
                           "isPure": false,
                           "lValueRequested": false,
                           "nodeType": "IndexAccess",
-                          "src": "4041:50:9",
+                          "src": "4110:49:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
                             "typeString": "bool"
                           }
                         },
-                        "id": 1722,
+                        "id": 1723,
                         "nodeType": "IfStatement",
-                        "src": "4037:66:9",
+                        "src": "4106:65:9",
                         "trueBody": {
                           "expression": {
-                            "id": 1720,
+                            "id": 1721,
                             "isConstant": false,
                             "isLValue": false,
                             "isPure": false,
                             "lValueRequested": false,
                             "leftHandSide": {
-                              "id": 1718,
+                              "id": 1719,
                               "name": "count",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1691,
-                              "src": "4093:5:9",
+                              "referencedDeclaration": 1692,
+                              "src": "4161:5:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_uint256",
                                 "typeString": "uint256"
@@ -26290,29 +26268,29 @@
                             "operator": "+=",
                             "rightHandSide": {
                               "hexValue": "31",
-                              "id": 1719,
+                              "id": 1720,
                               "isConstant": false,
                               "isLValue": false,
                               "isPure": true,
                               "kind": "number",
                               "lValueRequested": false,
                               "nodeType": "Literal",
-                              "src": "4102:1:9",
+                              "src": "4170:1:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_rational_1_by_1",
                                 "typeString": "int_const 1"
                               },
                               "value": "1"
                             },
-                            "src": "4093:10:9",
+                            "src": "4161:10:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_uint256",
                               "typeString": "uint256"
                             }
                           },
-                          "id": 1721,
+                          "id": 1722,
                           "nodeType": "ExpressionStatement",
-                          "src": "4093:10:9"
+                          "src": "4161:10:9"
                         }
                       },
                       {
@@ -26321,18 +26299,18 @@
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           },
-                          "id": 1725,
+                          "id": 1726,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "leftExpression": {
-                            "id": 1723,
+                            "id": 1724,
                             "name": "count",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1691,
-                            "src": "4115:5:9",
+                            "referencedDeclaration": 1692,
+                            "src": "4183:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_uint256",
                               "typeString": "uint256"
@@ -26341,47 +26319,47 @@
                           "nodeType": "BinaryOperation",
                           "operator": "==",
                           "rightExpression": {
-                            "id": 1724,
+                            "id": 1725,
                             "name": "required",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
                             "referencedDeclaration": 1437,
-                            "src": "4124:8:9",
+                            "src": "4192:8:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_uint256",
                               "typeString": "uint256"
                             }
                           },
-                          "src": "4115:17:9",
+                          "src": "4183:17:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
                             "typeString": "bool"
                           }
                         },
-                        "id": 1728,
+                        "id": 1729,
                         "nodeType": "IfStatement",
-                        "src": "4111:34:9",
+                        "src": "4179:34:9",
                         "trueBody": {
                           "expression": {
                             "hexValue": "74727565",
-                            "id": 1726,
+                            "id": 1727,
                             "isConstant": false,
                             "isLValue": false,
                             "isPure": true,
                             "kind": "bool",
                             "lValueRequested": false,
                             "nodeType": "Literal",
-                            "src": "4141:4:9",
+                            "src": "4209:4:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bool",
                               "typeString": "bool"
                             },
                             "value": "true"
                           },
-                          "functionReturnParameters": 1689,
-                          "id": 1727,
+                          "functionReturnParameters": 1690,
+                          "id": 1728,
                           "nodeType": "Return",
-                          "src": "4134:11:9"
+                          "src": "4202:11:9"
                         }
                       }
                     ]
@@ -26391,18 +26369,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1706,
+                    "id": 1707,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftExpression": {
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+                      "id": 1705,
                       "name": "i",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1701,
-                      "src": "4005:1:9",
+                      "referencedDeclaration": 1702,
+                      "src": "4075:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -26411,38 +26389,38 @@
                     "nodeType": "BinaryOperation",
                     "operator": "<",
                     "rightExpression": {
-                      "id": 1705,
-                      "name": "executorCount",
+                      "id": 1706,
+                      "name": "confirmCount",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1695,
-                      "src": "4009:13:9",
+                      "referencedDeclaration": 1696,
+                      "src": "4079:12:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "4005:17:9",
+                    "src": "4075:16:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "id": 1730,
+                  "id": 1731,
                   "initializationExpression": {
                     "assignments": [
-                      1701
+                      1702
                     ],
                     "declarations": [
                       {
                         "constant": false,
-                        "id": 1701,
+                        "id": 1702,
                         "mutability": "mutable",
                         "name": "i",
-                        "nameLocation": "3998:1:9",
+                        "nameLocation": "4068:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 1730,
-                        "src": "3990:9:9",
+                        "scope": 1731,
+                        "src": "4060:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -26450,10 +26428,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 1700,
+                          "id": 1701,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "3990:7:9",
+                          "src": "4060:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -26462,17 +26440,17 @@
                         "visibility": "internal"
                       }
                     ],
-                    "id": 1703,
+                    "id": 1704,
                     "initialValue": {
                       "hexValue": "30",
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+                      "id": 1703,
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                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "4002:1:9",
+                      "src": "4072:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -26480,11 +26458,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "3990:13:9"
+                    "src": "4060:13:9"
                   },
                   "loopExpression": {
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-                      "id": 1708,
+                      "id": 1709,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -26492,14 +26470,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": false,
-                      "src": "4024:3:9",
+                      "src": "4093:3:9",
                       "subExpression": {
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+                        "id": 1708,
                         "name": "i",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1701,
-                        "src": "4024:1:9",
+                        "referencedDeclaration": 1702,
+                        "src": "4093:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26510,36 +26488,42 @@
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1709,
+                    "id": 1710,
                     "nodeType": "ExpressionStatement",
-                    "src": "4024:3:9"
+                    "src": "4093:3:9"
                   },
                   "nodeType": "ForStatement",
-                  "src": "3985:167:9"
+                  "src": "4055:165:9"
                 }
               ]
             },
+            "documentation": {
+              "id": 1684,
+              "nodeType": "StructuredDocumentation",
+              "src": "3827:69:9",
+              "text": " @dev Returns whether an operation is confirmed or not."
+            },
             "functionSelector": "6486aa51",
-            "id": 1732,
+            "id": 1733,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isConfirmed",
-            "nameLocation": "3836:11:9",
+            "nameLocation": "3908:11:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1686,
+              "id": 1687,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1685,
+                  "id": 1686,
                   "mutability": "mutable",
                   "name": "id",
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                   "nodeType": "VariableDeclaration",
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-                  "src": "3848:10:9",
+                  "scope": 1733,
+                  "src": "3920:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -26547,10 +26531,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1684,
+                    "id": 1685,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3848:7:9",
+                    "src": "3920:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -26559,21 +26543,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3847:12:9"
+              "src": "3919:12:9"
             },
             "returnParameters": {
-              "id": 1689,
+              "id": 1690,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1688,
+                  "id": 1689,
                   "mutability": "mutable",
                   "name": "ready",
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+                  "nameLocation": "3958:5:9",
                   "nodeType": "VariableDeclaration",
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-                  "src": "3881:10:9",
+                  "scope": 1733,
+                  "src": "3953:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -26581,10 +26565,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1687,
+                    "id": 1688,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3881:4:9",
+                    "src": "3953:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -26593,34 +26577,34 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3880:12:9"
+              "src": "3952:12:9"
             },
-            "scope": 2240,
-            "src": "3827:329:9",
+            "scope": 2241,
+            "src": "3899:325:9",
             "stateMutability": "view",
             "virtual": false,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1755,
+              "id": 1756,
               "nodeType": "Block",
-              "src": "4315:119:9",
+              "src": "4383:119:9",
               "statements": [
                 {
                   "assignments": [
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+                    1742
                   ],
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                       "constant": false,
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+                      "id": 1742,
                       "mutability": "mutable",
                       "name": "timestamp",
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+                      "nameLocation": "4397:9:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1755,
-                      "src": "4321:17:9",
+                      "scope": 1756,
+                      "src": "4389:17:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -26628,10 +26612,10 @@
                         "typeString": "uint256"
                       },
                       "typeName": {
-                        "id": 1740,
+                        "id": 1741,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
-                        "src": "4321:7:9",
+                        "src": "4389:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26640,16 +26624,16 @@
                       "visibility": "internal"
                     }
                   ],
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+                  "id": 1746,
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+                        "id": 1744,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1735,
-                        "src": "4354:2:9",
+                        "referencedDeclaration": 1736,
+                        "src": "4422:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -26663,18 +26647,18 @@
                           "typeString": "bytes32"
                         }
                       ],
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+                      "id": 1743,
                       "name": "getTimestamp",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1784,
-                      "src": "4341:12:9",
+                      "referencedDeclaration": 1785,
+                      "src": "4409:12:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                         "typeString": "function (bytes32) view returns (uint256)"
                       }
                     },
-                    "id": 1744,
+                    "id": 1745,
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@@ -26682,7 +26666,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "4341:16:9",
+                    "src": "4409:16:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
@@ -26690,7 +26674,7 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "4321:36:9"
+                  "src": "4389:36:9"
                 },
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                   "expression": {
@@ -26698,7 +26682,7 @@
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     },
-                    "id": 1753,
+                    "id": 1754,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -26708,18 +26692,18 @@
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       },
-                      "id": 1748,
+                      "id": 1749,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
                       "lValueRequested": false,
                       "leftExpression": {
-                        "id": 1746,
+                        "id": 1747,
                         "name": "timestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1741,
-                        "src": "4370:9:9",
+                        "referencedDeclaration": 1742,
+                        "src": "4438:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26728,18 +26712,18 @@
                       "nodeType": "BinaryOperation",
                       "operator": ">",
                       "rightExpression": {
-                        "id": 1747,
+                        "id": 1748,
                         "name": "_DONE_TIMESTAMP",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1423,
-                        "src": "4382:15:9",
+                        "src": "4450:15:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
-                      "src": "4370:27:9",
+                      "src": "4438:27:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bool",
                         "typeString": "bool"
@@ -26752,18 +26736,18 @@
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       },
-                      "id": 1752,
+                      "id": 1753,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
                       "lValueRequested": false,
                       "leftExpression": {
-                        "id": 1749,
+                        "id": 1750,
                         "name": "timestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1741,
-                        "src": "4401:9:9",
+                        "referencedDeclaration": 1742,
+                        "src": "4469:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26773,76 +26757,76 @@
                       "operator": "<=",
                       "rightExpression": {
                         "expression": {
-                          "id": 1750,
+                          "id": 1751,
                           "name": "block",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
                           "referencedDeclaration": 4294967292,
-                          "src": "4414:5:9",
+                          "src": "4482:5:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_magic_block",
                             "typeString": "block"
                           }
                         },
-                        "id": 1751,
+                        "id": 1752,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "memberName": "timestamp",
                         "nodeType": "MemberAccess",
-                        "src": "4414:15:9",
+                        "src": "4482:15:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
-                      "src": "4401:28:9",
+                      "src": "4469:28:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bool",
                         "typeString": "bool"
                       }
                     },
-                    "src": "4370:59:9",
+                    "src": "4438:59:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "functionReturnParameters": 1739,
-                  "id": 1754,
+                  "functionReturnParameters": 1740,
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                   "nodeType": "Return",
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+                  "src": "4431:66:9"
                 }
               ]
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+              "id": 1734,
               "nodeType": "StructuredDocumentation",
-              "src": "4160:65:9",
+              "src": "4228:65:9",
               "text": " @dev Returns whether an operation is ready or not."
             },
             "functionSelector": "13bc9f20",
-            "id": 1756,
+            "id": 1757,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isOperationReady",
-            "nameLocation": "4237:16:9",
+            "nameLocation": "4305:16:9",
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@@ -26850,10 +26834,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1734,
+                    "id": 1735,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4259:7:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -26862,21 +26846,21 @@
                   "visibility": "internal"
                 }
               ],
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+              "src": "4321:20:9"
             },
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+              "id": 1740,
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+                  "id": 1739,
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                   "name": "ready",
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-                  "src": "4303:10:9",
+                  "scope": 1757,
+                  "src": "4371:10:9",
                   "stateVariable": false,
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@@ -26884,10 +26868,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1737,
+                    "id": 1738,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4303:4:9",
+                    "src": "4371:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -26896,19 +26880,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4302:12:9"
+              "src": "4370:12:9"
             },
-            "scope": 2240,
-            "src": "4228:206:9",
+            "scope": 2241,
+            "src": "4296:206:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
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-              "id": 1770,
+              "id": 1771,
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-              "src": "4582:53:9",
+              "src": "4650:53:9",
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                   "expression": {
@@ -26916,7 +26900,7 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1768,
+                    "id": 1769,
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                     "isLValue": false,
                     "isPure": false,
@@ -26924,12 +26908,12 @@
                     "leftExpression": {
                       "arguments": [
                         {
-                          "id": 1765,
+                          "id": 1766,
                           "name": "id",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1759,
-                          "src": "4608:2:9",
+                          "referencedDeclaration": 1760,
+                          "src": "4676:2:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
@@ -26943,18 +26927,18 @@
                             "typeString": "bytes32"
                           }
                         ],
-                        "id": 1764,
+                        "id": 1765,
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1784,
-                        "src": "4595:12:9",
+                        "referencedDeclaration": 1785,
+                        "src": "4663:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                           "typeString": "function (bytes32) view returns (uint256)"
                         }
                       },
-                      "id": 1766,
+                      "id": 1767,
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@@ -26962,7 +26946,7 @@
                       "lValueRequested": false,
                       "names": [],
                       "nodeType": "FunctionCall",
-                      "src": "4595:16:9",
+                      "src": "4663:16:9",
                       "tryCall": false,
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
@@ -26972,57 +26956,57 @@
                     "nodeType": "BinaryOperation",
                     "operator": "==",
                     "rightExpression": {
-                      "id": 1767,
+                      "id": 1768,
                       "name": "_DONE_TIMESTAMP",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1423,
-                      "src": "4615:15:9",
+                      "src": "4683:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "4595:35:9",
+                    "src": "4663:35:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "functionReturnParameters": 1763,
-                  "id": 1769,
+                  "functionReturnParameters": 1764,
+                  "id": 1770,
                   "nodeType": "Return",
-                  "src": "4588:42:9"
+                  "src": "4656:42:9"
                 }
               ]
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             "documentation": {
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+              "id": 1758,
               "nodeType": "StructuredDocumentation",
-              "src": "4438:64:9",
+              "src": "4506:64:9",
               "text": " @dev Returns whether an operation is done or not."
             },
             "functionSelector": "2ab0f529",
-            "id": 1771,
+            "id": 1772,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isOperationDone",
-            "nameLocation": "4514:15:9",
+            "nameLocation": "4582:15:9",
             "nodeType": "FunctionDefinition",
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+              "id": 1761,
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+                  "id": 1760,
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-                  "src": "4530:10:9",
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@@ -27030,10 +27014,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1758,
+                    "id": 1759,
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                     "nodeType": "ElementaryTypeName",
-                    "src": "4530:7:9",
+                    "src": "4598:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27042,21 +27026,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4529:12:9"
+              "src": "4597:12:9"
             },
             "returnParameters": {
-              "id": 1763,
+              "id": 1764,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1762,
+                  "id": 1763,
                   "mutability": "mutable",
                   "name": "done",
-                  "nameLocation": "4576:4:9",
+                  "nameLocation": "4644:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1771,
-                  "src": "4571:9:9",
+                  "scope": 1772,
+                  "src": "4639:9:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27064,10 +27048,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1761,
+                    "id": 1762,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4571:4:9",
+                    "src": "4639:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -27076,42 +27060,42 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4570:11:9"
+              "src": "4638:11:9"
             },
-            "scope": 2240,
-            "src": "4505:130:9",
+            "scope": 2241,
+            "src": "4573:130:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1783,
+              "id": 1784,
               "nodeType": "Block",
-              "src": "4862:33:9",
+              "src": "4930:33:9",
               "statements": [
                 {
                   "expression": {
                     "baseExpression": {
-                      "id": 1779,
+                      "id": 1780,
                       "name": "_timestamps",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1427,
-                      "src": "4875:11:9",
+                      "src": "4943:11:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
                         "typeString": "mapping(bytes32 => uint256)"
                       }
                     },
-                    "id": 1781,
+                    "id": 1782,
                     "indexExpression": {
-                      "id": 1780,
+                      "id": 1781,
                       "name": "id",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1774,
-                      "src": "4887:2:9",
+                      "referencedDeclaration": 1775,
+                      "src": "4955:2:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes32",
                         "typeString": "bytes32"
@@ -27122,46 +27106,46 @@
                     "isPure": false,
                     "lValueRequested": false,
                     "nodeType": "IndexAccess",
-                    "src": "4875:15:9",
+                    "src": "4943:15:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "functionReturnParameters": 1778,
-                  "id": 1782,
+                  "functionReturnParameters": 1779,
+                  "id": 1783,
                   "nodeType": "Return",
-                  "src": "4868:22:9"
+                  "src": "4936:22:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1772,
+              "id": 1773,
               "nodeType": "StructuredDocumentation",
-              "src": "4639:130:9",
+              "src": "4707:130:9",
               "text": " @dev Returns the timestamp at with an operation becomes ready (0 for\n unset operations, 1 for done operations)."
             },
             "functionSelector": "d45c4435",
-            "id": 1784,
+            "id": 1785,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "getTimestamp",
-            "nameLocation": "4781:12:9",
+            "nameLocation": "4849:12:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1775,
+              "id": 1776,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1774,
+                  "id": 1775,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "4807:2:9",
+                  "nameLocation": "4875:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1784,
-                  "src": "4799:10:9",
+                  "scope": 1785,
+                  "src": "4867:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27169,10 +27153,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1773,
+                    "id": 1774,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4799:7:9",
+                    "src": "4867:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27181,21 +27165,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4793:20:9"
+              "src": "4861:20:9"
             },
             "returnParameters": {
-              "id": 1778,
+              "id": 1779,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1777,
+                  "id": 1778,
                   "mutability": "mutable",
                   "name": "timestamp",
-                  "nameLocation": "4851:9:9",
+                  "nameLocation": "4919:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1784,
-                  "src": "4843:17:9",
+                  "scope": 1785,
+                  "src": "4911:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27203,10 +27187,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1776,
+                    "id": 1777,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4843:7:9",
+                    "src": "4911:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -27215,19 +27199,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4842:19:9"
+              "src": "4910:19:9"
             },
-            "scope": 2240,
-            "src": "4772:123:9",
+            "scope": 2241,
+            "src": "4840:123:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1814,
+              "id": 1815,
               "nodeType": "Block",
-              "src": "5205:82:9",
+              "src": "5273:82:9",
               "statements": [
                 {
                   "expression": {
@@ -27235,60 +27219,60 @@
                       {
                         "arguments": [
                           {
-                            "id": 1806,
+                            "id": 1807,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1788,
-                            "src": "5239:7:9",
+                            "referencedDeclaration": 1789,
+                            "src": "5307:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
                           {
-                            "id": 1807,
+                            "id": 1808,
                             "name": "values",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1791,
-                            "src": "5248:6:9",
+                            "referencedDeclaration": 1792,
+                            "src": "5316:6:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                               "typeString": "uint256[] calldata"
                             }
                           },
                           {
-                            "id": 1808,
+                            "id": 1809,
                             "name": "datas",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1794,
-                            "src": "5256:5:9",
+                            "referencedDeclaration": 1795,
+                            "src": "5324:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                               "typeString": "bytes calldata[] calldata"
                             }
                           },
                           {
-                            "id": 1809,
+                            "id": 1810,
                             "name": "predecessor",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1796,
-                            "src": "5263:11:9",
+                            "referencedDeclaration": 1797,
+                            "src": "5331:11:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
                             }
                           },
                           {
-                            "id": 1810,
+                            "id": 1811,
                             "name": "salt",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1798,
-                            "src": "5276:4:9",
+                            "referencedDeclaration": 1799,
+                            "src": "5344:4:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -27319,31 +27303,31 @@
                             }
                           ],
                           "expression": {
-                            "id": 1804,
+                            "id": 1805,
                             "name": "abi",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
                             "referencedDeclaration": 4294967295,
-                            "src": "5228:3:9",
+                            "src": "5296:3:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_magic_abi",
                               "typeString": "abi"
                             }
                           },
-                          "id": 1805,
+                          "id": 1806,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": true,
                           "lValueRequested": false,
                           "memberName": "encode",
                           "nodeType": "MemberAccess",
-                          "src": "5228:10:9",
+                          "src": "5296:10:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_abiencode_pure$__$returns$_t_bytes_memory_ptr_$",
                             "typeString": "function () pure returns (bytes memory)"
                           }
                         },
-                        "id": 1811,
+                        "id": 1812,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
@@ -27351,7 +27335,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "5228:53:9",
+                        "src": "5296:53:9",
                         "tryCall": false,
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_memory_ptr",
@@ -27366,18 +27350,18 @@
                           "typeString": "bytes memory"
                         }
                       ],
-                      "id": 1803,
+                      "id": 1804,
                       "name": "keccak256",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 4294967288,
-                      "src": "5218:9:9",
+                      "src": "5286:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
                         "typeString": "function (bytes memory) pure returns (bytes32)"
                       }
                     },
-                    "id": 1812,
+                    "id": 1813,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -27385,47 +27369,47 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5218:64:9",
+                    "src": "5286:64:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   },
-                  "functionReturnParameters": 1802,
-                  "id": 1813,
+                  "functionReturnParameters": 1803,
+                  "id": 1814,
                   "nodeType": "Return",
-                  "src": "5211:71:9"
+                  "src": "5279:71:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1785,
+              "id": 1786,
               "nodeType": "StructuredDocumentation",
-              "src": "4899:99:9",
+              "src": "4967:99:9",
               "text": " @dev Returns the identifier of an operation containing a batch of\n transactions."
             },
             "functionSelector": "25b2060e",
-            "id": 1815,
+            "id": 1816,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "hashOperation",
-            "nameLocation": "5010:13:9",
+            "nameLocation": "5078:13:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1799,
+              "id": 1800,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1788,
+                  "id": 1789,
                   "mutability": "mutable",
                   "name": "targets",
-                  "nameLocation": "5048:7:9",
+                  "nameLocation": "5116:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5029:26:9",
+                  "scope": 1816,
+                  "src": "5097:26:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -27434,19 +27418,19 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1786,
+                      "id": 1787,
                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5029:7:9",
+                      "src": "5097:7:9",
                       "stateMutability": "nonpayable",
                       "typeDescriptions": {
                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
                     },
-                    "id": 1787,
+                    "id": 1788,
                     "nodeType": "ArrayTypeName",
-                    "src": "5029:9:9",
+                    "src": "5097:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
                       "typeString": "address[]"
@@ -27456,13 +27440,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1791,
+                  "id": 1792,
                   "mutability": "mutable",
                   "name": "values",
-                  "nameLocation": "5080:6:9",
+                  "nameLocation": "5148:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5061:25:9",
+                  "scope": 1816,
+                  "src": "5129:25:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -27471,18 +27455,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1789,
+                      "id": 1790,
                       "name": "uint256",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5061:7:9",
+                      "src": "5129:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1790,
+                    "id": 1791,
                     "nodeType": "ArrayTypeName",
-                    "src": "5061:9:9",
+                    "src": "5129:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr",
                       "typeString": "uint256[]"
@@ -27492,13 +27476,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1794,
+                  "id": 1795,
                   "mutability": "mutable",
                   "name": "datas",
-                  "nameLocation": "5109:5:9",
+                  "nameLocation": "5177:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5092:22:9",
+                  "scope": 1816,
+                  "src": "5160:22:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -27507,18 +27491,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1792,
+                      "id": 1793,
                       "name": "bytes",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5092:5:9",
+                      "src": "5160:5:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes_storage_ptr",
                         "typeString": "bytes"
                       }
                     },
-                    "id": 1793,
+                    "id": 1794,
                     "nodeType": "ArrayTypeName",
-                    "src": "5092:7:9",
+                    "src": "5160:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_bytes_storage_$dyn_storage_ptr",
                       "typeString": "bytes[]"
@@ -27528,13 +27512,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1796,
+                  "id": 1797,
                   "mutability": "mutable",
                   "name": "predecessor",
-                  "nameLocation": "5128:11:9",
+                  "nameLocation": "5196:11:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5120:19:9",
+                  "scope": 1816,
+                  "src": "5188:19:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27542,10 +27526,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1795,
+                    "id": 1796,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5120:7:9",
+                    "src": "5188:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27555,13 +27539,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1798,
+                  "id": 1799,
                   "mutability": "mutable",
                   "name": "salt",
-                  "nameLocation": "5153:4:9",
+                  "nameLocation": "5221:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5145:12:9",
+                  "scope": 1816,
+                  "src": "5213:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27569,10 +27553,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1797,
+                    "id": 1798,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5145:7:9",
+                    "src": "5213:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27581,21 +27565,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "5023:138:9"
+              "src": "5091:138:9"
             },
             "returnParameters": {
-              "id": 1802,
+              "id": 1803,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1801,
+                  "id": 1802,
                   "mutability": "mutable",
                   "name": "hash",
-                  "nameLocation": "5199:4:9",
+                  "nameLocation": "5267:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1815,
-                  "src": "5191:12:9",
+                  "scope": 1816,
+                  "src": "5259:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27603,10 +27587,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1800,
+                    "id": 1801,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5191:7:9",
+                    "src": "5259:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27615,19 +27599,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "5190:14:9"
+              "src": "5258:14:9"
             },
-            "scope": 2240,
-            "src": "5001:286:9",
+            "scope": 2241,
+            "src": "5069:286:9",
             "stateMutability": "pure",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1874,
+              "id": 1875,
               "nodeType": "Block",
-              "src": "5745:336:9",
+              "src": "5815:336:9",
               "statements": [
                 {
                   "expression": {
@@ -27637,32 +27621,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 1842,
+                        "id": 1843,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "leftExpression": {
                           "expression": {
-                            "id": 1838,
+                            "id": 1839,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1819,
-                            "src": "5766:7:9",
+                            "referencedDeclaration": 1820,
+                            "src": "5836:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 1839,
+                          "id": 1840,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "5766:14:9",
+                          "src": "5836:14:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -27672,31 +27656,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 1840,
+                            "id": 1841,
                             "name": "values",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1822,
-                            "src": "5784:6:9",
+                            "referencedDeclaration": 1823,
+                            "src": "5854:6:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                               "typeString": "uint256[] calldata"
                             }
                           },
-                          "id": 1841,
+                          "id": 1842,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "5784:13:9",
+                          "src": "5854:13:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "5766:31:9",
+                        "src": "5836:31:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -27704,14 +27688,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206c656e677468206d69736d61746368",
-                        "id": 1843,
+                        "id": 1844,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "5805:35:9",
+                        "src": "5875:35:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_a34a486f9100b008712958931fe0a50ea69be145b7a3d1e8680fe7decf64e499",
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -27730,7 +27714,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
                       ],
-                      "id": 1837,
+                      "id": 1838,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -27738,13 +27722,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "5751:7:9",
+                      "src": "5821:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 1844,
+                    "id": 1845,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -27752,16 +27736,16 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5751:95:9",
+                    "src": "5821:95:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1845,
+                  "id": 1846,
                   "nodeType": "ExpressionStatement",
-                  "src": "5751:95:9"
+                  "src": "5821:95:9"
                 },
                 {
                   "expression": {
@@ -27771,32 +27755,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 1851,
+                        "id": 1852,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "leftExpression": {
                           "expression": {
-                            "id": 1847,
+                            "id": 1848,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1819,
-                            "src": "5867:7:9",
+                            "referencedDeclaration": 1820,
+                            "src": "5937:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 1848,
+                          "id": 1849,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "5867:14:9",
+                          "src": "5937:14:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -27806,31 +27790,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 1849,
+                            "id": 1850,
                             "name": "datas",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1825,
-                            "src": "5885:5:9",
+                            "referencedDeclaration": 1826,
+                            "src": "5955:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                               "typeString": "bytes calldata[] calldata"
                             }
                           },
-                          "id": 1850,
+                          "id": 1851,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "5885:12:9",
+                          "src": "5955:12:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "5867:30:9",
+                        "src": "5937:30:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -27838,14 +27822,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206c656e677468206d69736d61746368",
-                        "id": 1852,
+                        "id": 1853,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "5905:35:9",
+                        "src": "5975:35:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_a34a486f9100b008712958931fe0a50ea69be145b7a3d1e8680fe7decf64e499",
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -27864,7 +27848,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
                       ],
-                      "id": 1846,
+                      "id": 1847,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -27872,13 +27856,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "5852:7:9",
+                      "src": "5922:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 1853,
+                    "id": 1854,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -27886,31 +27870,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5852:94:9",
+                    "src": "5922:94:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1854,
+                  "id": 1855,
                   "nodeType": "ExpressionStatement",
-                  "src": "5852:94:9"
+                  "src": "5922:94:9"
                 },
                 {
                   "assignments": [
-                    1856
+                    1857
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1856,
+                      "id": 1857,
                       "mutability": "mutable",
                       "name": "id",
-                      "nameLocation": "5961:2:9",
+                      "nameLocation": "6031:2:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1874,
-                      "src": "5953:10:9",
+                      "scope": 1875,
+                      "src": "6023:10:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -27918,10 +27902,10 @@
                         "typeString": "bytes32"
                       },
                       "typeName": {
-                        "id": 1855,
+                        "id": 1856,
                         "name": "bytes32",
                         "nodeType": "ElementaryTypeName",
-                        "src": "5953:7:9",
+                        "src": "6023:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -27930,64 +27914,64 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1864,
+                  "id": 1865,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 1858,
+                        "id": 1859,
                         "name": "targets",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1819,
-                        "src": "5980:7:9",
+                        "referencedDeclaration": 1820,
+                        "src": "6050:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
                       {
-                        "id": 1859,
+                        "id": 1860,
                         "name": "values",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1822,
-                        "src": "5989:6:9",
+                        "referencedDeclaration": 1823,
+                        "src": "6059:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                           "typeString": "uint256[] calldata"
                         }
                       },
                       {
-                        "id": 1860,
+                        "id": 1861,
                         "name": "datas",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1825,
-                        "src": "5997:5:9",
+                        "referencedDeclaration": 1826,
+                        "src": "6067:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                           "typeString": "bytes calldata[] calldata"
                         }
                       },
                       {
-                        "id": 1861,
+                        "id": 1862,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1827,
-                        "src": "6004:11:9",
+                        "referencedDeclaration": 1828,
+                        "src": "6074:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1862,
+                        "id": 1863,
                         "name": "salt",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1829,
-                        "src": "6017:4:9",
+                        "referencedDeclaration": 1830,
+                        "src": "6087:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -28017,18 +28001,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 1857,
+                      "id": 1858,
                       "name": "hashOperation",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1815,
-                      "src": "5966:13:9",
+                      "referencedDeclaration": 1816,
+                      "src": "6036:13:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_pure$_t_array$_t_address_$dyn_calldata_ptr_$_t_array$_t_uint256_$dyn_calldata_ptr_$_t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr_$_t_bytes32_$_t_bytes32_$returns$_t_bytes32_$",
                         "typeString": "function (address[] calldata,uint256[] calldata,bytes calldata[] calldata,bytes32,bytes32) pure returns (bytes32)"
                       }
                     },
-                    "id": 1863,
+                    "id": 1864,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -28036,7 +28020,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5966:56:9",
+                    "src": "6036:56:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
@@ -28044,30 +28028,30 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "5953:69:9"
+                  "src": "6023:69:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 1866,
+                        "id": 1867,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1856,
-                        "src": "6038:2:9",
+                        "referencedDeclaration": 1857,
+                        "src": "6108:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1867,
+                        "id": 1868,
                         "name": "delay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1831,
-                        "src": "6042:5:9",
+                        "referencedDeclaration": 1832,
+                        "src": "6112:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -28085,18 +28069,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 1865,
+                      "id": 1866,
                       "name": "_schedule",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1908,
-                      "src": "6028:9:9",
+                      "referencedDeclaration": 1909,
+                      "src": "6098:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_uint256_$returns$__$",
                         "typeString": "function (bytes32,uint256)"
                       }
                     },
-                    "id": 1868,
+                    "id": 1869,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -28104,27 +28088,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "6028:20:9",
+                    "src": "6098:20:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1869,
+                  "id": 1870,
                   "nodeType": "ExpressionStatement",
-                  "src": "6028:20:9"
+                  "src": "6098:20:9"
                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 1871,
+                        "id": 1872,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1856,
-                        "src": "6073:2:9",
+                        "referencedDeclaration": 1857,
+                        "src": "6143:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -28138,18 +28122,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 1870,
+                      "id": 1871,
                       "name": "ScheduleAdded",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1442,
-                      "src": "6059:13:9",
+                      "src": "6129:13:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32)"
                       }
                     },
-                    "id": 1872,
+                    "id": 1873,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -28157,74 +28141,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "6059:17:9",
+                    "src": "6129:17:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1873,
+                  "id": 1874,
                   "nodeType": "EmitStatement",
-                  "src": "6054:22:9"
+                  "src": "6124:22:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1816,
+              "id": 1817,
               "nodeType": "StructuredDocumentation",
-              "src": "5291:227:9",
+              "src": "5359:227:9",
               "text": " @dev Schedule an operation containing a batch of transactions.\n Emits one {ScheduleAdded} event per transaction in the batch.\n Requirements:\n - the caller must have the 'proposer' role."
             },
             "functionSelector": "83443de2",
-            "id": 1875,
+            "id": 1876,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 1834,
+                    "id": 1835,
                     "name": "PROPOSER_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1407,
-                    "src": "5730:13:9",
+                    "src": "5800:13:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 1835,
+                "id": 1836,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 1833,
+                  "id": 1834,
                   "name": "onlyRoleOrOpenRole",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 1648,
-                  "src": "5711:18:9"
+                  "src": "5781:18:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "5711:33:9"
+                "src": "5781:33:9"
               }
             ],
             "name": "schedule",
-            "nameLocation": "5530:8:9",
+            "nameLocation": "5598:8:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1832,
+              "id": 1833,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1819,
+                  "id": 1820,
                   "mutability": "mutable",
                   "name": "targets",
-                  "nameLocation": "5563:7:9",
+                  "nameLocation": "5631:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1875,
-                  "src": "5544:26:9",
+                  "scope": 1876,
+                  "src": "5612:26:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -28233,19 +28217,19 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1817,
+                      "id": 1818,
                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5544:7:9",
+                      "src": "5612:7:9",
                       "stateMutability": "nonpayable",
                       "typeDescriptions": {
                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
                     },
-                    "id": 1818,
+                    "id": 1819,
                     "nodeType": "ArrayTypeName",
-                    "src": "5544:9:9",
+                    "src": "5612:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
                       "typeString": "address[]"
@@ -28255,13 +28239,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1822,
+                  "id": 1823,
                   "mutability": "mutable",
                   "name": "values",
-                  "nameLocation": "5595:6:9",
+                  "nameLocation": "5663:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1875,
-                  "src": "5576:25:9",
+                  "scope": 1876,
+                  "src": "5644:25:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -28270,18 +28254,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1820,
+                      "id": 1821,
                       "name": "uint256",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5576:7:9",
+                      "src": "5644:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1821,
+                    "id": 1822,
                     "nodeType": "ArrayTypeName",
-                    "src": "5576:9:9",
+                    "src": "5644:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr",
                       "typeString": "uint256[]"
@@ -28291,13 +28275,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1825,
+                  "id": 1826,
                   "mutability": "mutable",
                   "name": "datas",
-                  "nameLocation": "5624:5:9",
+                  "nameLocation": "5692:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1875,
-                  "src": "5607:22:9",
+                  "scope": 1876,
+                  "src": "5675:22:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -28306,18 +28290,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1823,
+                      "id": 1824,
                       "name": "bytes",
                       "nodeType": "ElementaryTypeName",
-                      "src": "5607:5:9",
+                      "src": "5675:5:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes_storage_ptr",
                         "typeString": "bytes"
                       }
                     },
-                    "id": 1824,
+                    "id": 1825,
                     "nodeType": "ArrayTypeName",
-                    "src": "5607:7:9",
+                    "src": "5675:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_bytes_storage_$dyn_storage_ptr",
                       "typeString": "bytes[]"
@@ -28327,13 +28311,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1827,
+                  "id": 1828,
                   "mutability": "mutable",
                   "name": "predecessor",
-                  "nameLocation": "5643:11:9",
+                  "nameLocation": "5711:11:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1875,
-                  "src": "5635:19:9",
+                  "scope": 1876,
+                  "src": "5703:19:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -28341,10 +28325,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1826,
+                    "id": 1827,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5635:7:9",
+                    "src": "5703:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -28354,13 +28338,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1829,
+                  "id": 1830,
                   "mutability": "mutable",
                   "name": "salt",
-                  "nameLocation": "5668:4:9",
+                  "nameLocation": "5736:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1875,
-                  "src": "5660:12:9",
+                  "scope": 1876,
+                  "src": "5728:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -28368,10 +28352,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1828,
+                    "id": 1829,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5660:7:9",
+                    "src": "5728:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -28381,13 +28365,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1831,
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@@ -28462,18 +28446,18 @@
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@@ -28745,61 +28729,61 @@
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@@ -28807,10 +28791,10 @@
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@@ -28820,13 +28804,13 @@
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@@ -28846,25 +28830,25 @@
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@@ -28872,12 +28856,12 @@
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@@ -28891,18 +28875,18 @@
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@@ -29058,18 +29042,18 @@
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                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1932,
+                  "id": 1933,
                   "nodeType": "EmitStatement",
-                  "src": "6776:18:9"
+                  "src": "6856:18:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1909,
+              "id": 1910,
               "nodeType": "StructuredDocumentation",
-              "src": "6437:118:9",
+              "src": "6507:118:9",
               "text": " @dev Cancel an operation.\n Requirements:\n - the caller must have the 'proposer' role."
             },
             "functionSelector": "c4d252f5",
-            "id": 1934,
+            "id": 1935,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 1914,
+                    "id": 1915,
                     "name": "PROPOSER_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1407,
-                    "src": "6620:13:9",
+                    "src": "6700:13:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 1915,
+                "id": 1916,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 1913,
+                  "id": 1914,
                   "name": "onlyRoleOrOpenRole",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 1648,
-                  "src": "6601:18:9"
+                  "src": "6681:18:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "6601:33:9"
+                "src": "6681:33:9"
               }
             ],
             "name": "cancel",
-            "nameLocation": "6567:6:9",
+            "nameLocation": "6637:6:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1912,
+              "id": 1913,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1911,
+                  "id": 1912,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "6582:2:9",
+                  "nameLocation": "6657:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1934,
-                  "src": "6574:10:9",
+                  "scope": 1935,
+                  "src": "6649:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -29152,10 +29136,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1910,
+                    "id": 1911,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "6574:7:9",
+                    "src": "6649:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -29164,31 +29148,31 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "6573:12:9"
+              "src": "6643:20:9"
             },
             "returnParameters": {
-              "id": 1916,
+              "id": 1917,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "6635:0:9"
+              "src": "6715:0:9"
             },
-            "scope": 2240,
-            "src": "6558:241:9",
+            "scope": 2241,
+            "src": "6628:251:9",
             "stateMutability": "nonpayable",
             "virtual": true,
-            "visibility": "public"
+            "visibility": "external"
           },
           {
             "body": {
-              "id": 1983,
+              "id": 1984,
               "nodeType": "Block",
-              "src": "6979:266:9",
+              "src": "7061:266:9",
               "statements": [
                 {
                   "body": {
-                    "id": 1975,
+                    "id": 1976,
                     "nodeType": "Block",
-                    "src": "7026:175:9",
+                    "src": "7108:175:9",
                     "statements": [
                       {
                         "expression": {
@@ -29197,25 +29181,25 @@
                               "arguments": [
                                 {
                                   "baseExpression": {
-                                    "id": 1957,
+                                    "id": 1958,
                                     "name": "ids",
                                     "nodeType": "Identifier",
                                     "overloadedDeclarations": [],
-                                    "referencedDeclaration": 1938,
-                                    "src": "7070:3:9",
+                                    "referencedDeclaration": 1939,
+                                    "src": "7152:3:9",
                                     "typeDescriptions": {
                                       "typeIdentifier": "t_array$_t_bytes32_$dyn_calldata_ptr",
                                       "typeString": "bytes32[] calldata"
                                     }
                                   },
-                                  "id": 1959,
+                                  "id": 1960,
                                   "indexExpression": {
-                                    "id": 1958,
+                                    "id": 1959,
                                     "name": "i",
                                     "nodeType": "Identifier",
                                     "overloadedDeclarations": [],
-                                    "referencedDeclaration": 1945,
-                                    "src": "7074:1:9",
+                                    "referencedDeclaration": 1946,
+                                    "src": "7156:1:9",
                                     "typeDescriptions": {
                                       "typeIdentifier": "t_uint256",
                                       "typeString": "uint256"
@@ -29226,7 +29210,7 @@
                                   "isPure": false,
                                   "lValueRequested": false,
                                   "nodeType": "IndexAccess",
-                                  "src": "7070:6:9",
+                                  "src": "7152:6:9",
                                   "typeDescriptions": {
                                     "typeIdentifier": "t_bytes32",
                                     "typeString": "bytes32"
@@ -29240,18 +29224,18 @@
                                     "typeString": "bytes32"
                                   }
                                 ],
-                                "id": 1956,
+                                "id": 1957,
                                 "name": "isOperationPending",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
                                 "referencedDeclaration": 1683,
-                                "src": "7051:18:9",
+                                "src": "7133:18:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                                   "typeString": "function (bytes32) view returns (bool)"
                                 }
                               },
-                              "id": 1960,
+                              "id": 1961,
                               "isConstant": false,
                               "isLValue": false,
                               "isPure": false,
@@ -29259,7 +29243,7 @@
                               "lValueRequested": false,
                               "names": [],
                               "nodeType": "FunctionCall",
-                              "src": "7051:26:9",
+                              "src": "7133:26:9",
                               "tryCall": false,
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bool",
@@ -29268,14 +29252,14 @@
                             },
                             {
                               "hexValue": "42454d756c746953696757616c6c65743a206f7065726174696f6e206e6f74206578697374206f722066696e6973686564",
-                              "id": 1961,
+                              "id": 1962,
                               "isConstant": false,
                               "isLValue": false,
                               "isPure": true,
                               "kind": "string",
                               "lValueRequested": false,
                               "nodeType": "Literal",
-                              "src": "7087:51:9",
+                              "src": "7169:51:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_stringliteral_f189764673a1904d80a5eac6f1e4952021d4400f0665b76222b6d1047bee845d",
                                 "typeString": "literal_string \"BEMultiSigWallet: operation not exist or finished\""
@@ -29294,7 +29278,7 @@
                                 "typeString": "literal_string \"BEMultiSigWallet: operation not exist or finished\""
                               }
                             ],
-                            "id": 1955,
+                            "id": 1956,
                             "name": "require",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [
@@ -29302,13 +29286,13 @@
                               4294967278
                             ],
                             "referencedDeclaration": 4294967278,
-                            "src": "7034:7:9",
+                            "src": "7116:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                               "typeString": "function (bool,string memory) pure"
                             }
                           },
-                          "id": 1962,
+                          "id": 1963,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -29316,20 +29300,20 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "7034:112:9",
+                          "src": "7116:112:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
                         },
-                        "id": 1963,
+                        "id": 1964,
                         "nodeType": "ExpressionStatement",
-                        "src": "7034:112:9"
+                        "src": "7116:112:9"
                       },
                       {
                         "expression": {
-                          "id": 1973,
+                          "id": 1974,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -29337,39 +29321,39 @@
                           "leftHandSide": {
                             "baseExpression": {
                               "baseExpression": {
-                                "id": 1964,
+                                "id": 1965,
                                 "name": "confirmations",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
                                 "referencedDeclaration": 1433,
-                                "src": "7154:13:9",
+                                "src": "7236:13:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_mapping$_t_bytes32_$_t_mapping$_t_address_$_t_bool_$_$",
                                   "typeString": "mapping(bytes32 => mapping(address => bool))"
                                 }
                               },
-                              "id": 1970,
+                              "id": 1971,
                               "indexExpression": {
                                 "baseExpression": {
-                                  "id": 1965,
+                                  "id": 1966,
                                   "name": "ids",
                                   "nodeType": "Identifier",
                                   "overloadedDeclarations": [],
-                                  "referencedDeclaration": 1938,
-                                  "src": "7168:3:9",
+                                  "referencedDeclaration": 1939,
+                                  "src": "7250:3:9",
                                   "typeDescriptions": {
                                     "typeIdentifier": "t_array$_t_bytes32_$dyn_calldata_ptr",
                                     "typeString": "bytes32[] calldata"
                                   }
                                 },
-                                "id": 1967,
+                                "id": 1968,
                                 "indexExpression": {
-                                  "id": 1966,
+                                  "id": 1967,
                                   "name": "i",
                                   "nodeType": "Identifier",
                                   "overloadedDeclarations": [],
-                                  "referencedDeclaration": 1945,
-                                  "src": "7172:1:9",
+                                  "referencedDeclaration": 1946,
+                                  "src": "7254:1:9",
                                   "typeDescriptions": {
                                     "typeIdentifier": "t_uint256",
                                     "typeString": "uint256"
@@ -29380,7 +29364,7 @@
                                 "isPure": false,
                                 "lValueRequested": false,
                                 "nodeType": "IndexAccess",
-                                "src": "7168:6:9",
+                                "src": "7250:6:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_bytes32",
                                   "typeString": "bytes32"
@@ -29391,34 +29375,34 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "7154:21:9",
+                              "src": "7236:21:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_mapping$_t_address_$_t_bool_$",
                                 "typeString": "mapping(address => bool)"
                               }
                             },
-                            "id": 1971,
+                            "id": 1972,
                             "indexExpression": {
                               "expression": {
-                                "id": 1968,
+                                "id": 1969,
                                 "name": "msg",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
                                 "referencedDeclaration": 4294967281,
-                                "src": "7176:3:9",
+                                "src": "7258:3:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_magic_message",
                                   "typeString": "msg"
                                 }
                               },
-                              "id": 1969,
+                              "id": 1970,
                               "isConstant": false,
                               "isLValue": false,
                               "isPure": false,
                               "lValueRequested": false,
                               "memberName": "sender",
                               "nodeType": "MemberAccess",
-                              "src": "7176:10:9",
+                              "src": "7258:10:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_address",
                                 "typeString": "address"
@@ -29429,7 +29413,7 @@
                             "isPure": false,
                             "lValueRequested": true,
                             "nodeType": "IndexAccess",
-                            "src": "7154:33:9",
+                            "src": "7236:33:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bool",
                               "typeString": "bool"
@@ -29439,29 +29423,29 @@
                           "operator": "=",
                           "rightHandSide": {
                             "hexValue": "74727565",
-                            "id": 1972,
+                            "id": 1973,
                             "isConstant": false,
                             "isLValue": false,
                             "isPure": true,
                             "kind": "bool",
                             "lValueRequested": false,
                             "nodeType": "Literal",
-                            "src": "7190:4:9",
+                            "src": "7272:4:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bool",
                               "typeString": "bool"
                             },
                             "value": "true"
                           },
-                          "src": "7154:40:9",
+                          "src": "7236:40:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
                             "typeString": "bool"
                           }
                         },
-                        "id": 1974,
+                        "id": 1975,
                         "nodeType": "ExpressionStatement",
-                        "src": "7154:40:9"
+                        "src": "7236:40:9"
                       }
                     ]
                   },
@@ -29470,18 +29454,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1951,
+                    "id": 1952,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftExpression": {
-                      "id": 1948,
+                      "id": 1949,
                       "name": "i",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1945,
-                      "src": "7005:1:9",
+                      "referencedDeclaration": 1946,
+                      "src": "7087:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -29491,51 +29475,51 @@
                     "operator": "<",
                     "rightExpression": {
                       "expression": {
-                        "id": 1949,
+                        "id": 1950,
                         "name": "ids",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1938,
-                        "src": "7009:3:9",
+                        "referencedDeclaration": 1939,
+                        "src": "7091:3:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_bytes32_$dyn_calldata_ptr",
                           "typeString": "bytes32[] calldata"
                         }
                       },
-                      "id": 1950,
+                      "id": 1951,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "7009:10:9",
+                      "src": "7091:10:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "7005:14:9",
+                    "src": "7087:14:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "id": 1976,
+                  "id": 1977,
                   "initializationExpression": {
                     "assignments": [
-                      1945
+                      1946
                     ],
                     "declarations": [
                       {
                         "constant": false,
-                        "id": 1945,
+                        "id": 1946,
                         "mutability": "mutable",
                         "name": "i",
-                        "nameLocation": "6998:1:9",
+                        "nameLocation": "7080:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 1976,
-                        "src": "6990:9:9",
+                        "scope": 1977,
+                        "src": "7072:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -29543,10 +29527,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 1944,
+                          "id": 1945,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "6990:7:9",
+                          "src": "7072:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -29555,17 +29539,17 @@
                         "visibility": "internal"
                       }
                     ],
-                    "id": 1947,
+                    "id": 1948,
                     "initialValue": {
                       "hexValue": "30",
-                      "id": 1946,
+                      "id": 1947,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "7002:1:9",
+                      "src": "7084:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -29573,11 +29557,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "6990:13:9"
+                    "src": "7072:13:9"
                   },
                   "loopExpression": {
                     "expression": {
-                      "id": 1953,
+                      "id": 1954,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -29585,14 +29569,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "7021:3:9",
+                      "src": "7103:3:9",
                       "subExpression": {
-                        "id": 1952,
+                        "id": 1953,
                         "name": "i",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1945,
-                        "src": "7023:1:9",
+                        "referencedDeclaration": 1946,
+                        "src": "7105:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -29603,49 +29587,49 @@
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1954,
+                    "id": 1955,
                     "nodeType": "ExpressionStatement",
-                    "src": "7021:3:9"
+                    "src": "7103:3:9"
                   },
                   "nodeType": "ForStatement",
-                  "src": "6985:216:9"
+                  "src": "7067:216:9"
                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
                         "expression": {
-                          "id": 1978,
+                          "id": 1979,
                           "name": "msg",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
                           "referencedDeclaration": 4294967281,
-                          "src": "7224:3:9",
+                          "src": "7306:3:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_magic_message",
                             "typeString": "msg"
                           }
                         },
-                        "id": 1979,
+                        "id": 1980,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "memberName": "sender",
                         "nodeType": "MemberAccess",
-                        "src": "7224:10:9",
+                        "src": "7306:10:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_address",
                           "typeString": "address"
                         }
                       },
                       {
-                        "id": 1980,
+                        "id": 1981,
                         "name": "ids",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1938,
-                        "src": "7236:3:9",
+                        "referencedDeclaration": 1939,
+                        "src": "7318:3:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_bytes32_$dyn_calldata_ptr",
                           "typeString": "bytes32[] calldata"
@@ -29663,18 +29647,18 @@
                           "typeString": "bytes32[] calldata"
                         }
                       ],
-                      "id": 1977,
+                      "id": 1978,
                       "name": "Confirmation",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1459,
-                      "src": "7211:12:9",
+                      "src": "7293:12:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_array$_t_bytes32_$dyn_memory_ptr_$returns$__$",
                         "typeString": "function (address,bytes32[] memory)"
                       }
                     },
-                    "id": 1981,
+                    "id": 1982,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -29682,74 +29666,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "7211:29:9",
+                    "src": "7293:29:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1982,
+                  "id": 1983,
                   "nodeType": "EmitStatement",
-                  "src": "7206:34:9"
+                  "src": "7288:34:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1935,
+              "id": 1936,
               "nodeType": "StructuredDocumentation",
-              "src": "6803:73:9",
+              "src": "6883:73:9",
               "text": "  @dev Allows an executor to confirm multiple transactions."
             },
             "functionSelector": "d2082330",
-            "id": 1984,
+            "id": 1985,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 1941,
+                    "id": 1942,
                     "name": "CONFIRM_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1417,
-                    "src": "6965:12:9",
+                    "src": "7047:12:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 1942,
+                "id": 1943,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 1940,
+                  "id": 1941,
                   "name": "onlyRoleOrOpenRole",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 1648,
-                  "src": "6946:18:9"
+                  "src": "7028:18:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "6946:32:9"
+                "src": "7028:32:9"
               }
             ],
             "name": "confirmTransaction",
-            "nameLocation": "6888:18:9",
+            "nameLocation": "6968:18:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1939,
+              "id": 1940,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1938,
+                  "id": 1939,
                   "mutability": "mutable",
                   "name": "ids",
-                  "nameLocation": "6931:3:9",
+                  "nameLocation": "7011:3:9",
                   "nodeType": "VariableDeclaration",
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-                  "src": "6912:22:9",
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@@ -29758,18 +29742,18 @@
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                         "typeString": "bytes32"
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@@ -29778,31 +29762,31 @@
                   "visibility": "internal"
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@@ -29811,25 +29795,25 @@
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@@ -29840,7 +29824,7 @@
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@@ -29854,18 +29838,18 @@
                                     "typeString": "bytes32"
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@@ -29873,7 +29857,7 @@
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@@ -29882,14 +29866,14 @@
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@@ -29908,7 +29892,7 @@
                                 "typeString": "literal_string \"BEMultiSigWallet: operation not exist or finished\""
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@@ -29916,13 +29900,13 @@
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@@ -29951,39 +29935,39 @@
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@@ -29994,7 +29978,7 @@
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@@ -30005,34 +29989,34 @@
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@@ -30043,7 +30027,7 @@
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@@ -30053,29 +30037,29 @@
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@@ -30084,18 +30068,18 @@
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@@ -30105,51 +30089,51 @@
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@@ -30157,10 +30141,10 @@
                           "typeString": "uint256"
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@@ -30169,17 +30153,17 @@
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@@ -30187,11 +30171,11 @@
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@@ -30199,14 +30183,14 @@
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@@ -30217,49 +30201,49 @@
                         "typeString": "uint256"
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@@ -30277,18 +30261,18 @@
                           "typeString": "bytes32[] calldata"
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@@ -30296,74 +30280,74 @@
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@@ -30372,18 +30356,18 @@
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@@ -30392,25 +30376,25 @@
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@@ -30420,32 +30404,32 @@
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                           "typeString": "uint256"
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                             "typeString": "uint256"
@@ -30455,31 +30439,31 @@
                         "operator": "==",
                         "rightExpression": {
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+                            "id": 2058,
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                               "typeString": "uint256[] calldata"
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                             "typeString": "uint256"
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@@ -30487,14 +30471,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206c656e677468206d69736d61746368",
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                         "lValueRequested": false,
                         "nodeType": "Literal",
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@@ -30513,7 +30497,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
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@@ -30521,13 +30505,13 @@
                         4294967278
                       ],
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@@ -30535,16 +30519,16 @@
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@@ -30554,32 +30538,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
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                               "typeString": "address[] calldata"
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+                          "src": "8367:14:9",
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                             "typeString": "uint256"
@@ -30589,31 +30573,31 @@
                         "operator": "==",
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+                            "id": 2067,
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                               "typeString": "bytes calldata[] calldata"
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                           "memberName": "length",
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+                          "src": "8385:12:9",
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                             "typeString": "uint256"
                           }
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@@ -30621,14 +30605,14 @@
                       },
                       {
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                         "lValueRequested": false,
                         "nodeType": "Literal",
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@@ -30647,7 +30631,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
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@@ -30655,13 +30639,13 @@
                         4294967278
                       ],
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@@ -30669,31 +30653,31 @@
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@@ -30701,10 +30685,10 @@
                         "typeString": "bytes32"
                       },
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+                        "id": 2073,
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@@ -30713,64 +30697,64 @@
                       "visibility": "internal"
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                           "typeString": "uint256[] calldata"
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@@ -30800,18 +30784,18 @@
                           "typeString": "bytes32"
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@@ -30819,7 +30803,7 @@
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@@ -30827,30 +30811,30 @@
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@@ -30868,18 +30852,18 @@
                           "typeString": "bytes32"
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@@ -30887,47 +30871,47 @@
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@@ -30938,7 +30922,7 @@
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@@ -30946,25 +30930,25 @@
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@@ -30975,7 +30959,7 @@
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@@ -30983,25 +30967,25 @@
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@@ -31012,7 +30996,7 @@
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@@ -31034,18 +31018,18 @@
                                 "typeString": "bytes calldata"
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@@ -31053,16 +31037,16 @@
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@@ -31071,18 +31055,18 @@
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@@ -31092,51 +31076,51 @@
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                         "name": "targets",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2038,
-                        "src": "8500:7:9",
+                        "referencedDeclaration": 2039,
+                        "src": "8586:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
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                       "isPure": false,
                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "8500:14:9",
+                      "src": "8586:14:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "8496:18:9",
+                    "src": "8582:18:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "id": 2111,
+                  "id": 2112,
                   "initializationExpression": {
                     "assignments": [
-                      2088
+                      2089
                     ],
                     "declarations": [
                       {
                         "constant": false,
-                        "id": 2088,
+                        "id": 2089,
                         "mutability": "mutable",
                         "name": "i",
-                        "nameLocation": "8489:1:9",
+                        "nameLocation": "8575:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 2111,
-                        "src": "8481:9:9",
+                        "scope": 2112,
+                        "src": "8567:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -31144,10 +31128,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 2087,
+                          "id": 2088,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "8481:7:9",
+                          "src": "8567:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -31156,17 +31140,17 @@
                         "visibility": "internal"
                       }
                     ],
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+                    "id": 2091,
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                       "hexValue": "30",
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                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "8493:1:9",
+                      "src": "8579:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -31174,11 +31158,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "8481:13:9"
+                    "src": "8567:13:9"
                   },
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+                      "id": 2097,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -31186,14 +31170,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "8516:3:9",
+                      "src": "8602:3:9",
                       "subExpression": {
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+                        "id": 2096,
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                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2088,
-                        "src": "8518:1:9",
+                        "referencedDeclaration": 2089,
+                        "src": "8604:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -31204,23 +31188,23 @@
                         "typeString": "uint256"
                       }
                     },
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+                    "id": 2098,
                     "nodeType": "ExpressionStatement",
-                    "src": "8516:3:9"
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                   },
                   "nodeType": "ForStatement",
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                       {
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+                        "id": 2114,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2073,
-                        "src": "8590:2:9",
+                        "referencedDeclaration": 2074,
+                        "src": "8676:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -31234,18 +31218,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2112,
+                      "id": 2113,
                       "name": "_afterCall",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2178,
-                      "src": "8579:10:9",
+                      "referencedDeclaration": 2179,
+                      "src": "8665:10:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32)"
                       }
                     },
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@@ -31253,27 +31237,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8579:14:9",
+                    "src": "8665:14:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
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                   "nodeType": "ExpressionStatement",
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                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2117,
+                        "id": 2118,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2073,
-                        "src": "8621:2:9",
+                        "referencedDeclaration": 2074,
+                        "src": "8707:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -31287,18 +31271,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2116,
+                      "id": 2117,
                       "name": "ScheduleExecuted",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1447,
-                      "src": "8604:16:9",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32)"
                       }
                     },
-                    "id": 2118,
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@@ -31306,74 +31290,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8604:20:9",
+                    "src": "8690:20:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
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                   "nodeType": "EmitStatement",
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                 }
               ]
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             "documentation": {
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+              "id": 2036,
               "nodeType": "StructuredDocumentation",
-              "src": "7711:233:9",
+              "src": "7795:233:9",
               "text": " @dev Execute an (ready) operation containing a batch of transactions.\n Emits one {CallExecuted} event per transaction in the batch.\n Requirements:\n - the caller must have the 'executor' role."
             },
             "functionSelector": "f156883b",
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+            "id": 2122,
             "implemented": true,
             "kind": "function",
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               {
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                   {
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+                    "id": 2052,
                     "name": "EXECUTOR_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1412,
-                    "src": "8144:13:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
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                 "kind": "modifierInvocation",
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                 },
                 "nodeType": "ModifierInvocation",
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               }
             ],
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-                  "src": "7969:26:9",
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                   "storageLocation": "calldata",
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@@ -31382,19 +31366,19 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 2036,
+                      "id": 2037,
                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "7969:7:9",
+                      "src": "8053:7:9",
                       "stateMutability": "nonpayable",
                       "typeDescriptions": {
                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
                     },
-                    "id": 2037,
+                    "id": 2038,
                     "nodeType": "ArrayTypeName",
-                    "src": "7969:9:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
                       "typeString": "address[]"
@@ -31404,13 +31388,13 @@
                 },
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                   "constant": false,
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                   "mutability": "mutable",
                   "name": "values",
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@@ -31419,18 +31403,18 @@
                   },
                   "typeName": {
                     "baseType": {
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                       "name": "uint256",
                       "nodeType": "ElementaryTypeName",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
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+                    "id": 2041,
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-                    "src": "8001:9:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr",
                       "typeString": "uint256[]"
@@ -31440,13 +31424,13 @@
                 },
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                   "mutability": "mutable",
                   "name": "datas",
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-                  "src": "8032:22:9",
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                   "stateVariable": false,
                   "storageLocation": "calldata",
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@@ -31455,18 +31439,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 2042,
+                      "id": 2043,
                       "name": "bytes",
                       "nodeType": "ElementaryTypeName",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes_storage_ptr",
                         "typeString": "bytes"
                       }
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                     "nodeType": "ArrayTypeName",
-                    "src": "8032:7:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_bytes_storage_$dyn_storage_ptr",
                       "typeString": "bytes[]"
@@ -31476,13 +31460,13 @@
                 },
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                   "mutability": "mutable",
                   "name": "predecessor",
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                   "storageLocation": "default",
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@@ -31490,10 +31474,10 @@
                     "typeString": "bytes32"
                   },
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-                    "id": 2045,
+                    "id": 2046,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "8060:7:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -31503,13 +31487,13 @@
                 },
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                   "mutability": "mutable",
                   "name": "salt",
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                   "stateVariable": false,
                   "storageLocation": "default",
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@@ -31517,10 +31501,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 2047,
+                    "id": 2048,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "8085:7:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -31529,25 +31513,25 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "7963:138:9"
+              "src": "8047:138:9"
             },
             "returnParameters": {
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               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "8159:0:9"
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             },
-            "scope": 2240,
-            "src": "7947:682:9",
+            "scope": 2241,
+            "src": "8031:684:9",
             "stateMutability": "payable",
             "virtual": true,
-            "visibility": "public"
+            "visibility": "external"
           },
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               "nodeType": "Block",
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               "statements": [
                 {
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@@ -31555,12 +31539,12 @@
                       {
                         "arguments": [
                           {
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+                            "id": 2132,
                             "name": "id",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2124,
-                            "src": "8802:2:9",
+                            "referencedDeclaration": 2125,
+                            "src": "8888:2:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -31574,18 +31558,18 @@
                               "typeString": "bytes32"
                             }
                           ],
-                          "id": 2130,
+                          "id": 2131,
                           "name": "isOperationReady",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1756,
-                          "src": "8785:16:9",
+                          "referencedDeclaration": 1757,
+                          "src": "8871:16:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                             "typeString": "function (bytes32) view returns (bool)"
                           }
                         },
-                        "id": 2132,
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                         "isConstant": false,
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                         "isPure": false,
@@ -31593,7 +31577,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "8785:20:9",
+                        "src": "8871:20:9",
                         "tryCall": false,
                         "typeDescriptions": {
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@@ -31602,14 +31586,14 @@
                       },
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "8807:42:9",
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                         "typeDescriptions": {
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                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
@@ -31628,7 +31612,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
                         }
                       ],
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@@ -31636,13 +31620,13 @@
                         4294967278
                       ],
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                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
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@@ -31650,16 +31634,16 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8777:73:9",
+                    "src": "8863:73:9",
                     "tryCall": false,
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                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
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@@ -31667,12 +31651,12 @@
                       {
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                             "name": "id",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2124,
-                            "src": "8883:2:9",
+                            "referencedDeclaration": 2125,
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                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -31686,18 +31670,18 @@
                               "typeString": "bytes32"
                             }
                           ],
-                          "id": 2137,
+                          "id": 2138,
                           "name": "isConfirmed",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1732,
-                          "src": "8871:11:9",
+                          "referencedDeclaration": 1733,
+                          "src": "8957:11:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                             "typeString": "function (bytes32) view returns (bool)"
                           }
                         },
-                        "id": 2139,
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                         "isPure": false,
@@ -31705,7 +31689,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "8871:15:9",
+                        "src": "8957:15:9",
                         "tryCall": false,
                         "typeDescriptions": {
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@@ -31714,14 +31698,14 @@
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "8894:62:9",
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                         "typeDescriptions": {
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                           "typeString": "literal_string \"BEMultiSigWallet: operation not reach required confirmations\""
@@ -31740,7 +31724,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation not reach required confirmations\""
                         }
                       ],
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@@ -31748,13 +31732,13 @@
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-                      "src": "8856:7:9",
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                         "typeString": "function (bool,string memory) pure"
                       }
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@@ -31762,16 +31746,16 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8856:106:9",
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                       "typeString": "tuple()"
                     }
                   },
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                 },
                 {
                   "expression": {
@@ -31781,7 +31765,7 @@
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
                         },
-                        "id": 2153,
+                        "id": 2154,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
@@ -31791,18 +31775,18 @@
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
                           },
-                          "id": 2149,
+                          "id": 2150,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "leftExpression": {
-                            "id": 2144,
+                            "id": 2145,
                             "name": "predecessor",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2126,
-                            "src": "8983:11:9",
+                            "referencedDeclaration": 2127,
+                            "src": "9069:11:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -31814,14 +31798,14 @@
                             "arguments": [
                               {
                                 "hexValue": "30",
-                                "id": 2147,
+                                "id": 2148,
                                 "isConstant": false,
                                 "isLValue": false,
                                 "isPure": true,
                                 "kind": "number",
                                 "lValueRequested": false,
                                 "nodeType": "Literal",
-                                "src": "9006:1:9",
+                                "src": "9092:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_rational_0_by_1",
                                   "typeString": "int_const 0"
@@ -31836,26 +31820,26 @@
                                   "typeString": "int_const 0"
                                 }
                               ],
-                              "id": 2146,
+                              "id": 2147,
                               "isConstant": false,
                               "isLValue": false,
                               "isPure": true,
                               "lValueRequested": false,
                               "nodeType": "ElementaryTypeNameExpression",
-                              "src": "8998:7:9",
+                              "src": "9084:7:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_type$_t_bytes32_$",
                                 "typeString": "type(bytes32)"
                               },
                               "typeName": {
-                                "id": 2145,
+                                "id": 2146,
                                 "name": "bytes32",
                                 "nodeType": "ElementaryTypeName",
-                                "src": "8998:7:9",
+                                "src": "9084:7:9",
                                 "typeDescriptions": {}
                               }
                             },
-                            "id": 2148,
+                            "id": 2149,
                             "isConstant": false,
                             "isLValue": false,
                             "isPure": true,
@@ -31863,14 +31847,14 @@
                             "lValueRequested": false,
                             "names": [],
                             "nodeType": "FunctionCall",
-                            "src": "8998:10:9",
+                            "src": "9084:10:9",
                             "tryCall": false,
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
                             }
                           },
-                          "src": "8983:25:9",
+                          "src": "9069:25:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
                             "typeString": "bool"
@@ -31881,12 +31865,12 @@
                         "rightExpression": {
                           "arguments": [
                             {
-                              "id": 2151,
+                              "id": 2152,
                               "name": "predecessor",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 2126,
-                              "src": "9028:11:9",
+                              "referencedDeclaration": 2127,
+                              "src": "9114:11:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -31900,18 +31884,18 @@
                                 "typeString": "bytes32"
                               }
                             ],
-                            "id": 2150,
+                            "id": 2151,
                             "name": "isOperationDone",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1771,
-                            "src": "9012:15:9",
+                            "referencedDeclaration": 1772,
+                            "src": "9098:15:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                               "typeString": "function (bytes32) view returns (bool)"
                             }
                           },
-                          "id": 2152,
+                          "id": 2153,
                           "isConstant": false,
                           "isLValue": false,
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@@ -31919,14 +31903,14 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "9012:28:9",
+                          "src": "9098:28:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
                             "typeString": "bool"
                           }
                         },
-                        "src": "8983:57:9",
+                        "src": "9069:57:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -31934,14 +31918,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206d697373696e6720646570656e64656e6379",
-                        "id": 2154,
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                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "9048:38:9",
+                        "src": "9134:38:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_dd941925c974bb4b37fc449c3636956979b5143840e3dd79fa264fd005e44275",
                           "typeString": "literal_string \"BEMultiSigWallet: missing dependency\""
@@ -31960,7 +31944,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: missing dependency\""
                         }
                       ],
-                      "id": 2143,
+                      "id": 2144,
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                       "nodeType": "Identifier",
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@@ -31968,13 +31952,13 @@
                         4294967278
                       ],
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-                      "src": "8968:7:9",
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                       "typeDescriptions": {
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                         "typeString": "function (bool,string memory) pure"
                       }
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-                    "id": 2155,
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@@ -31982,45 +31966,45 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8968:124:9",
+                    "src": "9054:124:9",
                     "tryCall": false,
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                       "typeString": "tuple()"
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+              "id": 2123,
               "nodeType": "StructuredDocumentation",
-              "src": "8633:68:9",
+              "src": "8719:68:9",
               "text": " @dev Checks before execution of an operation's calls."
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+            "id": 2159,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "_beforeCall",
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@@ -32028,10 +32012,10 @@
                     "typeString": "bytes32"
                   },
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-                    "id": 2123,
+                    "id": 2124,
                     "name": "bytes32",
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-                    "src": "8725:7:9",
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                       "typeString": "bytes32"
@@ -32041,13 +32025,13 @@
                 },
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                   "constant": false,
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+                  "id": 2127,
                   "mutability": "mutable",
                   "name": "predecessor",
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+                  "scope": 2159,
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@@ -32055,10 +32039,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 2125,
+                    "id": 2126,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "8737:7:9",
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                     "typeDescriptions": {
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                       "typeString": "bytes32"
@@ -32067,25 +32051,25 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "8724:33:9"
+              "src": "8810:33:9"
             },
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-              "src": "8771:0:9"
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-            "src": "8704:393:9",
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@@ -32093,12 +32077,12 @@
                       {
                         "arguments": [
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-                            "id": 2166,
+                            "id": 2167,
                             "name": "id",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2161,
-                            "src": "9242:2:9",
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+                            "src": "9328:2:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -32112,18 +32096,18 @@
                               "typeString": "bytes32"
                             }
                           ],
-                          "id": 2165,
+                          "id": 2166,
                           "name": "isOperationReady",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1756,
-                          "src": "9225:16:9",
+                          "referencedDeclaration": 1757,
+                          "src": "9311:16:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                             "typeString": "function (bytes32) view returns (bool)"
                           }
                         },
-                        "id": 2167,
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                         "isConstant": false,
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                         "isPure": false,
@@ -32131,7 +32115,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "9225:20:9",
+                        "src": "9311:20:9",
                         "tryCall": false,
                         "typeDescriptions": {
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@@ -32140,14 +32124,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206f7065726174696f6e206973206e6f74207265616479",
-                        "id": 2168,
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "9247:42:9",
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                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_3071306add2bfff75b9ab79068a1537f4356af9ed062959388101e0b120a034f",
                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
@@ -32166,7 +32150,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
                         }
                       ],
-                      "id": 2164,
+                      "id": 2165,
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@@ -32174,13 +32158,13 @@
                         4294967278
                       ],
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-                      "src": "9217:7:9",
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                       "typeDescriptions": {
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                         "typeString": "function (bool,string memory) pure"
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@@ -32188,45 +32172,45 @@
                     "lValueRequested": false,
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                     "nodeType": "FunctionCall",
-                    "src": "9217:73:9",
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                       "typeString": "tuple()"
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                     "lValueRequested": false,
                     "leftHandSide": {
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-                        "id": 2171,
+                        "id": 2172,
                         "name": "_timestamps",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1427,
-                        "src": "9296:11:9",
+                        "src": "9382:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
                           "typeString": "mapping(bytes32 => uint256)"
                         }
                       },
-                      "id": 2173,
+                      "id": 2174,
                       "indexExpression": {
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+                        "id": 2173,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2161,
-                        "src": "9308:2:9",
+                        "referencedDeclaration": 2162,
+                        "src": "9394:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -32237,7 +32221,7 @@
                       "isPure": false,
                       "lValueRequested": true,
                       "nodeType": "IndexAccess",
-                      "src": "9296:15:9",
+                      "src": "9382:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -32246,55 +32230,55 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2174,
+                      "id": 2175,
                       "name": "_DONE_TIMESTAMP",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1423,
-                      "src": "9314:15:9",
+                      "src": "9400:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "9296:33:9",
+                    "src": "9382:33:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
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                   },
-                  "id": 2176,
+                  "id": 2177,
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-                  "src": "9296:33:9"
+                  "src": "9382:33:9"
                 }
               ]
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+              "id": 2160,
               "nodeType": "StructuredDocumentation",
-              "src": "9101:67:9",
+              "src": "9187:67:9",
               "text": " @dev Checks after execution of an operation's calls."
             },
-            "id": 2178,
+            "id": 2179,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "_afterCall",
-            "nameLocation": "9180:10:9",
+            "nameLocation": "9266:10:9",
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                   "stateVariable": false,
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@@ -32302,10 +32286,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 2160,
+                    "id": 2161,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9191:7:9",
+                    "src": "9277:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -32314,41 +32298,41 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "9190:12:9"
+              "src": "9276:12:9"
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             "stateMutability": "nonpayable",
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             "visibility": "private"
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           {
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               "statements": [
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                     null
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                       "name": "success",
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-                      "src": "9511:12:9",
+                      "scope": 2203,
+                      "src": "9597:12:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -32356,10 +32340,10 @@
                         "typeString": "bool"
                       },
                       "typeName": {
-                        "id": 2188,
+                        "id": 2189,
                         "name": "bool",
                         "nodeType": "ElementaryTypeName",
-                        "src": "9511:4:9",
+                        "src": "9597:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -32369,16 +32353,16 @@
                     },
                     null
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-                  "id": 2196,
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                         "name": "data",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2185,
-                        "src": "9555:4:9",
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+                        "src": "9641:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
@@ -32400,31 +32384,31 @@
                           }
                         ],
                         "expression": {
-                          "id": 2190,
+                          "id": 2191,
                           "name": "target",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 2181,
-                          "src": "9529:6:9",
+                          "referencedDeclaration": 2182,
+                          "src": "9615:6:9",
                           "typeDescriptions": {
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                             "typeString": "address"
                           }
                         },
-                        "id": 2191,
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                         "isConstant": false,
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                         "isPure": false,
                         "lValueRequested": false,
                         "memberName": "call",
                         "nodeType": "MemberAccess",
-                        "src": "9529:11:9",
+                        "src": "9615:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$",
                           "typeString": "function (bytes memory) payable returns (bool,bytes memory)"
                         }
                       },
-                      "id": 2193,
+                      "id": 2194,
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@@ -32435,25 +32419,25 @@
                       "nodeType": "FunctionCallOptions",
                       "options": [
                         {
-                          "id": 2192,
+                          "id": 2193,
                           "name": "value",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 2183,
-                          "src": "9548:5:9",
+                          "referencedDeclaration": 2184,
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                           "typeDescriptions": {
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                             "typeString": "uint256"
                           }
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                       ],
-                      "src": "9529:25:9",
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                         "typeString": "function (bytes memory) payable returns (bool,bytes memory)"
                       }
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                     "isLValue": false,
                     "isPure": false,
@@ -32461,7 +32445,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "9529:31:9",
+                    "src": "9615:31:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$",
@@ -32469,18 +32453,18 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "9510:50:9"
+                  "src": "9596:50:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 2198,
+                        "id": 2199,
                         "name": "success",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2189,
-                        "src": "9574:7:9",
+                        "referencedDeclaration": 2190,
+                        "src": "9660:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -32488,14 +32472,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a20756e6465726c79696e67207472616e73616374696f6e207265766572746564",
-                        "id": 2199,
+                        "id": 2200,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "9583:51:9",
+                        "src": "9669:51:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_4887496109bd7042bc943a0ba0978efb71ff89756cc68bec9bd24ffa06316a33",
                           "typeString": "literal_string \"BEMultiSigWallet: underlying transaction reverted\""
@@ -32514,7 +32498,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: underlying transaction reverted\""
                         }
                       ],
-                      "id": 2197,
+                      "id": 2198,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -32522,13 +32506,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "9566:7:9",
+                      "src": "9652:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 2200,
+                    "id": 2201,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -32536,45 +32520,45 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "9566:69:9",
+                    "src": "9652:69:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2201,
+                  "id": 2202,
                   "nodeType": "ExpressionStatement",
-                  "src": "9566:69:9"
+                  "src": "9652:69:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2179,
+              "id": 2180,
               "nodeType": "StructuredDocumentation",
-              "src": "9338:88:9",
+              "src": "9424:88:9",
               "text": " @dev Execute an operation's call.\n Emits a {CallExecuted} event."
             },
-            "id": 2203,
+            "id": 2204,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "_call",
-            "nameLocation": "9438:5:9",
+            "nameLocation": "9524:5:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2186,
+              "id": 2187,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2181,
+                  "id": 2182,
                   "mutability": "mutable",
                   "name": "target",
-                  "nameLocation": "9452:6:9",
+                  "nameLocation": "9538:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2203,
-                  "src": "9444:14:9",
+                  "scope": 2204,
+                  "src": "9530:14:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -32582,10 +32566,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 2180,
+                    "id": 2181,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9444:7:9",
+                    "src": "9530:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -32596,13 +32580,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2183,
+                  "id": 2184,
                   "mutability": "mutable",
                   "name": "value",
-                  "nameLocation": "9468:5:9",
+                  "nameLocation": "9554:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2203,
-                  "src": "9460:13:9",
+                  "scope": 2204,
+                  "src": "9546:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -32610,10 +32594,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2182,
+                    "id": 2183,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9460:7:9",
+                    "src": "9546:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -32623,13 +32607,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2185,
+                  "id": 2186,
                   "mutability": "mutable",
                   "name": "data",
-                  "nameLocation": "9490:4:9",
+                  "nameLocation": "9576:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2203,
-                  "src": "9475:19:9",
+                  "scope": 2204,
+                  "src": "9561:19:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -32637,10 +32621,10 @@
                     "typeString": "bytes"
                   },
                   "typeName": {
-                    "id": 2184,
+                    "id": 2185,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9475:5:9",
+                    "src": "9561:5:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -32649,48 +32633,48 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "9443:52:9"
+              "src": "9529:52:9"
             },
             "returnParameters": {
-              "id": 2187,
+              "id": 2188,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "9504:0:9"
+              "src": "9590:0:9"
             },
-            "scope": 2240,
-            "src": "9429:211:9",
+            "scope": 2241,
+            "src": "9515:211:9",
             "stateMutability": "nonpayable",
             "virtual": false,
             "visibility": "private"
           },
           {
             "body": {
-              "id": 2220,
+              "id": 2221,
               "nodeType": "Block",
-              "src": "10073:77:9",
+              "src": "10159:77:9",
               "statements": [
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2212,
+                        "id": 2213,
                         "name": "minDelay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1435,
-                        "src": "10099:8:9",
+                        "src": "10185:8:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2213,
+                        "id": 2214,
                         "name": "_minDelay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2206,
-                        "src": "10109:9:9",
+                        "referencedDeclaration": 2207,
+                        "src": "10195:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -32708,18 +32692,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 2211,
+                      "id": 2212,
                       "name": "MinDelayChange",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1473,
-                      "src": "10084:14:9",
+                      "src": "10170:14:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_uint256_$_t_uint256_$returns$__$",
                         "typeString": "function (uint256,uint256)"
                       }
                     },
-                    "id": 2214,
+                    "id": 2215,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -32727,31 +32711,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10084:35:9",
+                    "src": "10170:35:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2215,
+                  "id": 2216,
                   "nodeType": "EmitStatement",
-                  "src": "10079:40:9"
+                  "src": "10165:40:9"
                 },
                 {
                   "expression": {
-                    "id": 2218,
+                    "id": 2219,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
-                      "id": 2216,
+                      "id": 2217,
                       "name": "minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1435,
-                      "src": "10125:8:9",
+                      "src": "10211:8:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -32760,70 +32744,70 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2217,
+                      "id": 2218,
                       "name": "_minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2206,
-                      "src": "10136:9:9",
+                      "referencedDeclaration": 2207,
+                      "src": "10222:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "10125:20:9",
+                    "src": "10211:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "id": 2219,
+                  "id": 2220,
                   "nodeType": "ExpressionStatement",
-                  "src": "10125:20:9"
+                  "src": "10211:20:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2204,
+              "id": 2205,
               "nodeType": "StructuredDocumentation",
-              "src": "9644:358:9",
+              "src": "9730:358:9",
               "text": " @dev Changes the minimum wallet duration for future operations.\n Emits a {MinDelayChange} event.\n Requirements:\n - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n an operation where the wallet is the target and the data is the ABI-encoded call to this function."
             },
             "functionSelector": "5037ec62",
-            "id": 2221,
+            "id": 2222,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
-                "id": 2209,
+                "id": 2210,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 2208,
+                  "id": 2209,
                   "name": "onlyWallet",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 1495,
-                  "src": "10062:10:9"
+                  "src": "10148:10:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "10062:10:9"
+                "src": "10148:10:9"
               }
             ],
             "name": "changeDelay",
-            "nameLocation": "10014:11:9",
+            "nameLocation": "10100:11:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2207,
+              "id": 2208,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2206,
+                  "id": 2207,
                   "mutability": "mutable",
                   "name": "_minDelay",
-                  "nameLocation": "10034:9:9",
+                  "nameLocation": "10120:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2221,
-                  "src": "10026:17:9",
+                  "scope": 2222,
+                  "src": "10112:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -32831,10 +32815,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2205,
+                    "id": 2206,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "10026:7:9",
+                    "src": "10112:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -32843,48 +32827,48 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "10025:19:9"
+              "src": "10111:19:9"
             },
             "returnParameters": {
-              "id": 2210,
+              "id": 2211,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "10073:0:9"
+              "src": "10159:0:9"
             },
-            "scope": 2240,
-            "src": "10005:145:9",
+            "scope": 2241,
+            "src": "10091:145:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "external"
           },
           {
             "body": {
-              "id": 2238,
+              "id": 2239,
               "nodeType": "Block",
-              "src": "10399:80:9",
+              "src": "10485:80:9",
               "statements": [
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2230,
+                        "id": 2231,
                         "name": "required",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1437,
-                        "src": "10428:8:9",
+                        "src": "10514:8:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2231,
+                        "id": 2232,
                         "name": "_required",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2224,
-                        "src": "10438:9:9",
+                        "referencedDeclaration": 2225,
+                        "src": "10524:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -32902,18 +32886,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 2229,
+                      "id": 2230,
                       "name": "RequirementChange",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1480,
-                      "src": "10410:17:9",
+                      "src": "10496:17:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_uint256_$_t_uint256_$returns$__$",
                         "typeString": "function (uint256,uint256)"
                       }
                     },
-                    "id": 2232,
+                    "id": 2233,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -32921,31 +32905,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10410:38:9",
+                    "src": "10496:38:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2233,
+                  "id": 2234,
                   "nodeType": "EmitStatement",
-                  "src": "10405:43:9"
+                  "src": "10491:43:9"
                 },
                 {
                   "expression": {
-                    "id": 2236,
+                    "id": 2237,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
-                      "id": 2234,
+                      "id": 2235,
                       "name": "required",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 1437,
-                      "src": "10454:8:9",
+                      "src": "10540:8:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -32954,70 +32938,70 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2235,
+                      "id": 2236,
                       "name": "_required",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2224,
-                      "src": "10465:9:9",
+                      "referencedDeclaration": 2225,
+                      "src": "10551:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "10454:20:9",
+                    "src": "10540:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "id": 2237,
+                  "id": 2238,
                   "nodeType": "ExpressionStatement",
-                  "src": "10454:20:9"
+                  "src": "10540:20:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2222,
+              "id": 2223,
               "nodeType": "StructuredDocumentation",
-              "src": "10154:168:9",
+              "src": "10240:168:9",
               "text": " @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n @param _required Number of required confirmations."
             },
             "functionSelector": "ba51a6df",
-            "id": 2239,
+            "id": 2240,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
-                "id": 2227,
+                "id": 2228,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 2226,
+                  "id": 2227,
                   "name": "onlyWallet",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 1495,
-                  "src": "10388:10:9"
+                  "src": "10474:10:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "10388:10:9"
+                "src": "10474:10:9"
               }
             ],
             "name": "changeRequirement",
-            "nameLocation": "10334:17:9",
+            "nameLocation": "10420:17:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2225,
+              "id": 2226,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2224,
+                  "id": 2225,
                   "mutability": "mutable",
                   "name": "_required",
-                  "nameLocation": "10360:9:9",
+                  "nameLocation": "10446:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2239,
-                  "src": "10352:17:9",
+                  "scope": 2240,
+                  "src": "10438:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -33025,10 +33009,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2223,
+                    "id": 2224,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "10352:7:9",
+                    "src": "10438:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -33037,27 +33021,27 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "10351:19:9"
+              "src": "10437:19:9"
             },
             "returnParameters": {
-              "id": 2228,
+              "id": 2229,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "10399:0:9"
+              "src": "10485:0:9"
             },
-            "scope": 2240,
-            "src": "10325:154:9",
+            "scope": 2241,
+            "src": "10411:154:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "external"
           }
         ],
-        "scope": 2241,
-        "src": "168:10313:9",
+        "scope": 2242,
+        "src": "168:10399:9",
         "usedErrors": []
       }
     ],
-    "src": "32:10450:9"
+    "src": "32:10536:9"
   },
   "compiler": {
     "name": "solc",
@@ -33387,8 +33371,7 @@
     }
   },
   "schemaVersion": "3.4.11",
-  "updatedAt": "2023-04-19T02:14:02.512Z",
-  "networkType": "ethereum",
+  "updatedAt": "2023-04-19T09:05:27.700Z",
   "devdoc": {
     "events": {
       "Cancelled(bytes32)": {
@@ -33451,6 +33434,9 @@
       "hashOperation(address[],uint256[],bytes[],bytes32,bytes32)": {
         "details": "Returns the identifier of an operation containing a batch of transactions."
       },
+      "isConfirmed(bytes32)": {
+        "details": "Returns whether an operation is confirmed or not."
+      },
       "isOperation(bytes32)": {
         "details": "Returns whether an id correspond to a registered operation. This includes both Pending, Ready and Done operations."
       },
diff --git a/contracts/core/BEMultiSigWallet.sol b/contracts/core/BEMultiSigWallet.sol
index 5fe2834..e75d661 100644
--- a/contracts/core/BEMultiSigWallet.sol
+++ b/contracts/core/BEMultiSigWallet.sol
@@ -198,7 +198,7 @@ contract BEMultiSigWallet is AccessControlEnumerable {
     bytes32 predecessor,
     bytes32 salt,
     uint256 delay
-  ) public virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {
+  ) external virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {
     require(
       targets.length == values.length,
       "BEMultiSigWallet: length mismatch"
@@ -229,7 +229,9 @@ contract BEMultiSigWallet is AccessControlEnumerable {
    *
    * - the caller must have the 'proposer' role.
    */
-  function cancel(bytes32 id) public virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {
+  function cancel(
+    bytes32 id
+  ) external virtual onlyRoleOrOpenRole(PROPOSER_ROLE) {
     require(
       isOperationPending(id),
       "BEMultiSigWallet: operation cannot be cancelled"
@@ -244,7 +246,7 @@ contract BEMultiSigWallet is AccessControlEnumerable {
    */
   function confirmTransaction(
     bytes32[] calldata ids
-  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {
+  ) external onlyRoleOrOpenRole(CONFIRM_ROLE) {
     for (uint256 i = 0; i < ids.length; ++i) {
       require(
         isOperationPending(ids[i]),
@@ -260,7 +262,7 @@ contract BEMultiSigWallet is AccessControlEnumerable {
    */
   function revokeConfirmation(
     bytes32[] calldata ids
-  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {
+  ) external onlyRoleOrOpenRole(CONFIRM_ROLE) {
     for (uint256 i = 0; i < ids.length; ++i) {
       require(
         isOperationPending(ids[i]),
@@ -286,7 +288,7 @@ contract BEMultiSigWallet is AccessControlEnumerable {
     bytes[] calldata datas,
     bytes32 predecessor,
     bytes32 salt
-  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
+  ) external payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
     require(
       targets.length == values.length,
       "BEMultiSigWallet: length mismatch"