pragma ever-solidity >= 0.68.0;

/// @title Upgradable with Data Interface
/// @notice Interface for contract upgrade implementation
interface IUpgradableWithData {
    /// @notice Upgrades contract's code
    /// @dev Only the owner can perform. See Ownable
    /// @dev Should be implemented by developer
    /// @param _code Contract's new code
    /// @param _version Contract's new version
    /// @param _extra Extra user-defined data to use in upgrade
    /// @param _remainingGasTo Gas recipient
    function upgrade(
        TvmCell _code,
        optional(uint32) _version,
        TvmCell _extra,
        optional(address) _remainingGasTo
    ) external;
}