ERC165Spec.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/**
 * @title ERC-165 Standard Interface Detection
 *
 * @dev Interface of the ERC165 standard, as defined in the
 *       https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * @dev Implementers can declare support of contract interfaces,
 *      which can then be queried by others.
 *
 * @author Christian Reitwießner, Nick Johnson, Fabian Vogelsteller, Jordi Baylina, Konrad Feldmeier, William Entriken
 */
interface ERC165 {
	/**
	 * @notice Query if a contract implements an interface
	 *
	 * @dev Interface identification is specified in ERC-165.
	 *      This function uses less than 30,000 gas.
	 *
	 * @param interfaceID The interface identifier, as specified in ERC-165
	 * @return `true` if the contract implements `interfaceID` and
	 *      `interfaceID` is not 0xffffffff, `false` otherwise
	 */
	function supportsInterface(bytes4 interfaceID) external view returns (bool);
}