[
  "event AddrChanged(bytes32 indexed,address)",
  "event AddressChanged(bytes32 indexed,uint256,bytes)",
  "event InterfaceChanged(bytes32 indexed,bytes4 indexed,address)",
  "function addr(bytes32) view returns (address)",
  "function addr(bytes32,uint256) view returns (bytes)",
  "function interfaceImplementer(bytes32,bytes4) view returns (address)",
  "function setAddr(bytes32,uint256,bytes)",
  "function setAddr(bytes32,address)",
  "function setInterface(bytes32,bytes4,address)",
  "function supportsInterface(bytes4) pure returns (bool)"
]