interface IERC721Metadata is IERC721 {
    //@dev Returns the token collection name.
    function name() external view returns (string memory);

    //@dev Returns the token collection symbol.
    function symbol() external view returns (string memory);

    //@dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
    function tokenURI(uint256 tokenId) external view returns (string memory);
}
function symbol() external view returns (string memory);

//@dev Returns the token collection symbol.