creation_sourcecode: // SPDX-License-Identifier: MIT
  pragma solidity ^0.8.26;
  contract a {
      address immutable o;
      string public d;
      
      constructor(address m) {
          o = m;
      }
      
      function s(string calldata n) external {
          assert(o == msg.sender);
          d = n;
      }
  }