docs: def get_text(self):
          """Return extended progress bar text"""
          done_units = to_reasonable_unit(self.done, self.units)
          current = round(self.current / done_units['multiplier'], 2)
          percent = int(self.current * 100 / self.done)
          return '{0:.2f} of {1:.2f} {2} ({3}%)'.format(current,
                                                        done_units['val'],
                                                        done_units['label'],
                                                        percent)