code: def inspect(self, **kwargs):
          
          scf_cycle = abiinspect.PhononScfCycle.from_file(self.output_file.path)
          if scf_cycle is not None:
              if "title" not in kwargs: kwargs["title"] = str(self)
              return scf_cycle.plot(**kwargs)
docs: Plot the Phonon SCF cycle results with matplotlib.
  
          Returns:
              `matplotlib` figure, None if some error occurred.