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- pragma solidity ^0.5.0;
- /**
- * @dev Interface of the ERC165 standard, as defined in the
- * [EIP](https://eips.ethereum.org/EIPS/eip-165).
- *
- * Implementers can declare support of contract interfaces, which can then be
- * queried by others (`ERC165Checker`).
- *
- * For an implementation, see `ERC165`.
- */
- interface IERC165 {
- /**
- * @dev Returns true if this contract implements the interface defined by
- * `interfaceId`. See the corresponding
- * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
- * to learn more about how these ids are created.
- *
- * This function call must use less than 30 000 gas.
- */
- function supportsInterface(bytes4 interfaceId) external view returns (bool);
- }
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