// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.10;

interface IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

contract ERC721ReceiverMock is IERC721Receiver {
    function onERC721Received(
        address, // operator,
        address, // from,
        uint256, // tokenId,
        bytes calldata // data
    ) external pure returns (bytes4) {
        return IERC721Receiver.onERC721Received.selector;
    }
}