abstract contract ERC2981Base is ERC165, IERC2981Royalties {
    struct RoyaltyInfo {
        address recipient;
        uint24 amount;
    }

    /// @inheritdoc	ERC165
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return
        interfaceId == type(IERC2981Royalties).interfaceId ||
        super.supportsInterface(interfaceId);
    }
}
/// @dev This is a contract used to add ERC2981 support to ERC721 and 1155
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    return
    interfaceId == type(IERC2981Royalties).interfaceId ||
    super.supportsInterface(interfaceId);
}

/// @inheritdoc	ERC165