code: def _update_progress_bar(self):
          # type: (SyncCopy) -> None
          
          blobxfer.operations.progress.update_progress_bar(
              self._general_options,
              'synccopy',
              self._synccopy_start_time,
              self._synccopy_total,
              self._synccopy_sofar,
              self._synccopy_bytes_total,
              self._synccopy_bytes_sofar,
          )
docs: Update progress bar
          :param SyncCopy self: this