code: def plot(self, freq=None, figsize=(15, 5), title=None,
               logy=False, **kwargs):
          
  
          if title is None:
              title = self._get_default_plot_title(
                  freq, 'Equity Progression')
  
          ser = self._get_series(freq).rebase()
          return ser.plot(figsize=figsize, logy=logy,
                          title=title, **kwargs)
docs: Helper function for plotting the series.
  
          Args:
              * freq (str): Data frequency used for display purposes.
                  Refer to pandas docs for valid freq strings.
              * figsize ((x,y)): figure size
              * title (str): Title if default not appropriate
              * logy (bool): log-scale for y axis
              * kwargs: passed to pandas' plot method