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bytes4(keccak256('supportsInterface(bytes4)'))\n */\n\n /**\n * @dev a mapping of interface id to whether or not it's supported\n */\n mapping(bytes4 => bool) internal supportedInterfaces;\n\n /**\n * @dev A contract implementing SupportsInterfaceWithLookup\n * implement ERC165 itself\n */\n constructor()\n public\n {\n _registerInterface(InterfaceId_ERC165);\n }\n\n /**\n * @dev implement supportsInterface(bytes4) using a lookup table\n */\n function supportsInterface(bytes4 _interfaceId)\n external\n view\n returns (bool)\n {\n return supportedInterfaces[_interfaceId];\n }\n\n /**\n * @dev private method for registering an interface\n */\n function _registerInterface(bytes4 _interfaceId)\n internal\n {\n require(_interfaceId != 0xffffffff);\n supportedInterfaces[_interfaceId] = true;\n }\n}\n", "sourcePath": "/Users/willpark/Desktop/bookwork-blockchain/testcodes/9nftdapp-new/backend-nftdapp/node_modules/zeppelin-solidity/contracts/introspection/SupportsInterfaceWithLookup.sol", 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