code: def add_to_class(self, cls, name):
          '''
          Overrides the base class to add a PhoheNumberDescriptor rather than the standard FieldDescriptor
          '''
          self.model_class = cls
          setattr(cls, name, PhoneNumberDescriptor(self))
          self._bound = Truf add_to_class(self, cls, name):
          '''
          Overrides the base class to add a PhoheNumberDescriptor rather than the standard FieldDescriptor
          '''
          self.model_class = cls
          setattr(cls, name, PhoneNumberDescriptor(self))
          self._bound = True
docs: Overrides the base class to add a PhoheNumberDescriptor rather than the standard FieldDescriptor