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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update(self, stime=1, force_redraw=True):
 """ Update window, redraw, process messages query Parameters stime : int, optional Duration of timer that interrupt vtkRenderWindowInteractor in milliseconds. force_redraw : bool, optional Call vtkRenderWindowInteractor.Render() immediately. """


        if stime <= 0:
            stime = 1

        curr_time = time.time()
        if Plotter.last_update_time > curr_time:
            Plotter.last_update_time = curr_time

        if not hasattr(self, 'iren'):
            return

        update_rate = self.iren.GetDesiredUpdateRate()
        if (curr_time - Plotter.last_update_time) > (1.0/update_rate):
            self.right_timer_id = self.iren.CreateRepeatingTimer(stime)

            self.iren.Start()
            self.iren.DestroyTimer(self.right_timer_id)

            self._render()
            Plotter.last_update_time = curr_time
        else:
            if force_redraw:
                self.iren.Render()