code: def end_frequency(self, index):
          
          from pycbc.waveform.waveform import props
  
          return pycbc.waveform.get_waveform_end_frequency(
                                  self.table[index],
                                  approximant=self.approximant(index),
                                  **self.extra_args)
docs: Return the end frequency of the waveform at the given index value