[
  "event RoleAdminChanged(bytes32 indexed,bytes32 indexed,bytes32 indexed)",
  "event RoleGranted(bytes32 indexed,address indexed,address indexed)",
  "event RoleRevoked(bytes32 indexed,address indexed,address indexed)",
  "function getRoleAdmin(bytes32) view returns (bytes32)",
  "function grantRole(bytes32,address)",
  "function hasRole(bytes32,address) view returns (bool)",
  "function renounceRole(bytes32,address)",
  "function revokeRole(bytes32,address)"
]