code: def update(self, incr=1, force=False):
          
  
          self.count += incr
          self.parent.update(incr, force)
docs: Args:
              incr(int): Amount to increment ``count`` (Default: 1)
              force(bool): Force refresh even if ``min_delta`` has not been reached
  
          Increment progress bar and redraw
  
          Both this counter and the parent are incremented.
  
          Progress bar is only redrawn if min_delta seconds past since the last update on the parent.