code: def to_dict(self):
          
  
          #TODO: Implement a more memory efficient variant
          if self.L is None:
              return { "mu": self.mu.tolist(), "Sigma": self.Sigma.tolist()}
          else:
              return { "mu": self.mu.tolist(), "Sigma": self.Sigma.tolist(), "L": self.L.tolist()}
docs: Convert the object into a json serializable dictionary.
  
          Note: It uses the private method _save_to_input_dict of the parent.
  
          :return dict: json serializable dictionary containing the needed information to instantiate the object