// SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.8.0; contract Migrations { address public _owner = msg.sender; uint public _last_completed_migration; modifier restricted() { require( msg.sender == _owner, "This function is restricted to the contract's owner" ); _; } function setCompleted(uint _completed) public restricted { _last_completed_migration = _completed; } }