code: def get_color_label(self):
          
          if self.args.norm:
              return 'Normalized to {}'.format(self.args.norm)
          if len(self.units) == 1 and self.usetex:
              return r'ASD $\left({0}\right)$'.format(
                  self.units[0].to_string('latex').strip('$'))
          elif len(self.units) == 1:
              return 'ASD ({0})'.format(self.units[0].to_string('generic'))
          return super(Spectrogram, self).get_color_label()
docs: Text for colorbar label