docs: def plot_spectra_overlapped(ss, title=None, setup=_default_setup):
      """
      Plots one or more spectra in the same plot.
  
      Args:
        ss: list of Spectrum objects
        title=None: window title
        setup: PlotSpectrumSetup object
      """
  
      plt.figure()
      draw_spectra_overlapped(ss, title, setup)
      plt.show()