Flashes the last downloaded file to the given partition.

    Args:
      partition: Partition to flash.
      timeout_ms: Optional timeout in milliseconds to wait for it to finish.
      info_cb: See Download. Usually no messages.

    Returns:
      Response to a download request, normally nothing.

def flash(self, partition, timeout_ms=None, info_cb=DEFAULT_MESSAGE_CALLBACK):
    """Flashes the last downloaded file to the given partition.

    Args:
      partition: Partition to flash.
      timeout_ms: Optional timeout in milliseconds to wait for it to finish.
      info_cb: See Download. Usually no messages.

    Returns:
      Response to a download request, normally nothing.
    """
    return self._simple_command('flash', arg=partition, info_cb=info_cb,
                                timeout_ms=timeout_ms)