code: def _PrintProcessingTime(self, processing_status):
      
      if not processing_status:
        processing_time = '00:00:00'
      else:
        processing_time = time.time() - processing_status.start_time
        time_struct = time.gmtime(processing_time)
        processing_time = time.strftime('%H:%M:%S', time_struct)
  
      self._output_writer.Write(
          'Processing time\t\t: {0:s}\n'.format(processing_time))
docs: Prints the processing time.
  
      Args:
        processing_status (ProcessingStatus): processing status.