docs: def validate_supersmoother_bass():
      """Validate the supersmoother with extra bass."""
      x, y = smoother_friedman82.build_sample_smoother_problem_friedman82()
      plt.figure()
      plt.plot(x, y, '.', label='Data')
      for bass in range(0, 10, 3):
          smooth = supersmoother.SuperSmoother()
          smooth.set_bass_enhancement(bass)
          smooth.specify_data_set(x, y)
          smooth.compute()
          plt.plot(x, smooth.smooth_result, '.', label='Bass = {0}'.format(bass))
          # pylab.plot(self.x, smoother.smooth_result, label='Bass = {0}'.format(bass))
      finish_plot()