{
  "contractName": "MinterRole",
  "abi": [
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      "inputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "constructor"
    },
    {
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          "type": "address"
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      "anonymous": false,
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          "name": "account",
          "type": "address"
        }
      ],
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          "type": "address"
        }
      ],
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        {
          "name": "",
          "type": "bool"
        }
      ],
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      "stateMutability": "view",
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    },
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          "type": "address"
        }
      ],
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      "payable": false,
      "stateMutability": "nonpayable",
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      "name": "renounceMinter",
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      "payable": false,
      "stateMutability": "nonpayable",
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  "metadata": "",
  "bytecode": "0x",
  "deployedBytecode": "0x",
  "sourceMap": "",
  "deployedSourceMap": "",
  "source": "pragma solidity ^0.5.0;\n\nimport \"../Roles.sol\";\n\ncontract MinterRole {\n    using Roles for Roles.Role;\n\n    event MinterAdded(address indexed account);\n    event MinterRemoved(address indexed account);\n\n    Roles.Role private _minters;\n\n    constructor () internal {\n        _addMinter(msg.sender);\n    }\n\n    modifier onlyMinter() {\n        require(isMinter(msg.sender));\n        _;\n    }\n\n    function isMinter(address account) public view returns (bool) {\n        return _minters.has(account);\n    }\n\n    function addMinter(address account) public onlyMinter {\n        _addMinter(account);\n    }\n\n    function renounceMinter() public {\n        _removeMinter(msg.sender);\n    }\n\n    function _addMinter(address account) internal {\n        _minters.add(account);\n        emit MinterAdded(account);\n    }\n\n    function _removeMinter(address account) internal {\n        _minters.remove(account);\n        emit MinterRemoved(account);\n    }\n}\n",
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