abstract contract TwoBitBears is IBearDetail, IERC721Enumerable {

    /// The only public non-interface function declared usable for any caller
    /// @dev This call will fail for the official mainnet contract because TwoBitBears are sold out
    function createBear(uint256 quantity) public payable virtual;
}
/// Represents a deployed TwoBitBears contract
function createBear(uint256 quantity) public payable virtual;

/// The only public non-interface function declared usable for any caller
/// @dev This call will fail for the official mainnet contract because TwoBitBears are sold out