def _plot(self):
        """Plot stacked serie lines and stacked secondary lines"""
        for serie in self.series[::-1 if self.stack_from_top else 1]:
            self.line(serie)
        for serie in self.secondary_series[::-1 if self.stack_from_top else 1]:
            self.line(serie, True)
Plot stacked serie lines and stacked secondary lines