// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

contract Migrations {
  address public owner = msg.sender;
  uint256 public last_completed_migration;

  modifier restricted() {
    require(
      msg.sender == owner,
      "This function is restricted to the contract's owner"
    );
    _;
  }

  function setCompleted(uint256 completed) external restricted {
    last_completed_migration = completed;
  }

  function upgrade(address new_address) external restricted {
    Migrations upgraded = Migrations(new_address);
    upgraded.setCompleted(last_completed_migration);
  }
}