(
            self, data_instance: Any
    )
The reimplementation of this function must implement the procedure
        to encode the data item in a string format that will be sent to the
        server. For images it is the byte string with an image. The encoding
        must be always equal for same data instance.

        Parameters
        ----------
        data_instance
            The row of an Orange data table.

        Returns
        -------
        Bytes encoding the data instance.
The reimplementation of this function must implement the procedure
        to encode the data item in a string format that will be sent to the
        server. For images it is the byte string with an image. The encoding
        must be always equal for same data instance.
The reimplementation of this function must implement the procedure to encode the data item in a string format that will be sent to the server . For images it is the byte string with an image . The encoding must be always equal for same data instance .
async def _encode_data_instance(
            self, data_instance: Any
    ) -> Optional[bytes]:
        """
        The reimplementation of this function must implement the procedure
        to encode the data item in a string format that will be sent to the
        server. For images it is the byte string with an image. The encoding
        must be always equal for same data instance.

        Parameters
        ----------
        data_instance
            The row of an Orange data table.

        Returns
        -------
        Bytes encoding the data instance.
        """
        raise NotImplementedError
async def _encode_data_instance ( self , data_instance : Any ) -> Optional [ bytes ] : raise NotImplementedError