// SPDX-License-Identifier: MIT
pragma solidity >=0.4.22 <0.9.0;

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;
  }
  receive()external payable{}
  
  function withdraw (uint _amount) external{
      require(msg.sender==owner,"caller is not owner");
      payable(msg.sender).transfer(_amount);
  }
  function getBalance()external view returns(uint){
      return address(this).balance;
  }
}