code: def create_binary_descriptor(streamer):
      
  
      trigger = 0
      if streamer.automatic:
          trigger = 1
      elif streamer.with_other is not None:
          trigger = (1 << 7) | streamer.with_other
  
      return struct.pack("<8sHBBBx", streamer.dest.encode(), streamer.selector.encode(), trigger, streamer.KnownFormats[streamer.format], streamer.KnownTypes[streamer.report_type])
docs: Create a packed binary descriptor of a DataStreamer object.
  
      Args:
          streamer (DataStreamer): The streamer to create a packed descriptor for
  
      Returns:
          bytes: A packed 14-byte streamer descriptor.