```\n        function createHat( uint256 _admin, string memory _details, uint32 _maxSupply, address _eligibility,\n            address _toggle, bool _mutable,  string memory _imageURI)       \n                 public returns (uint256 newHatId) {\n        if (uint8(_admin) > 0) {\n                    revert MaxLevelsReached();\n                 }\n             ….\n        }\n```\n