# IERC165*Interface of the ERC165 standard, as defined in the https://eips.ethereum.org/EIPS/eip-165[EIP]. Implementers can declare support of contract interfaces, which can then be queried by others ({ERC165Checker}). For an implementation, see {ERC165}.*## Methods### supportsInterface```solidityfunction supportsInterface(bytes4 interfaceId) external view returns (bool)```*Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.*#### Parameters| Name | Type | Description ||---|---|---|| interfaceId | bytes4 | undefined#### Returns| Name | Type | Description ||---|---|---|| _0 | bool | undefined
