Perform a resumable upload.

        :type stream: IO[bytes]
        :param stream: A bytes IO object open for reading.

        :type metadata: dict
        :param metadata: The metadata associated with the upload.

        :type num_retries: int
        :param num_retries: Number of upload retries. (Deprecated: This
                            argument will be removed in a future release.)

        :rtype: :class:`~requests.Response`
        :returns: The "200 OK" response object returned after the final chunk
                  is uploaded.

def _do_resumable_upload(self, stream, metadata, num_retries):
        """Perform a resumable upload.

        :type stream: IO[bytes]
        :param stream: A bytes IO object open for reading.

        :type metadata: dict
        :param metadata: The metadata associated with the upload.

        :type num_retries: int
        :param num_retries: Number of upload retries. (Deprecated: This
                            argument will be removed in a future release.)

        :rtype: :class:`~requests.Response`
        :returns: The "200 OK" response object returned after the final chunk
                  is uploaded.
        """
        upload, transport = self._initiate_resumable_upload(
            stream, metadata, num_retries
        )

        while not upload.finished:
            response = upload.transmit_next_chunk(transport)

        return response