          if isinstance(model_or_iterable, ModelBase):
              model_or_iterable = [model_or_iterable]
          for model in model_or_iterable:
              if model in self._registry:
                  raise AlreadyModerated("The model '%s' is already being moderated" % model._meta.module_name)
              self._registry[model] = moderation_class(model)
  
      def unregister(self, model_or_iterable):
          """
          Remove a model or a list of models from the list of models
 
</s> remove                 raise NotModerated("The model '%s' is not currently being moderated" % model._meta.module_name)
 </s> add                 raise NotModerated("The model '%s' is not currently being moderated" % model._meta.model_name) </s> remove     Helper to look up a model from an "app_label.module_name" string.
 </s> add     Helper to look up a model from an "app_label.model_name" string. </s> remove         if m._meta.object_name.lower() == model_name:
 </s> add         if m._meta.model_name == model_name: </s> remove             model_name = model._meta.object_name.lower()
 </s> add             model_name = model._meta.model_name </s> remove         key = (opts.app_label, opts.object_name.lower())
 </s> add         key = (opts.app_label, opts.model_name)
                raise AlreadyModerated("The model '%s' is already being moderated" % model._meta.model_name)
          if isinstance(model_or_iterable, ModelBase):
              model_or_iterable = [model_or_iterable]
          for model in model_or_iterable:
              if model in self._registry:
                raise AlreadyModerated("The model '%s' is already being moderated" % model._meta.model_name)
              self._registry[model] = moderation_class(model)
  
      def unregister(self, model_or_iterable):
          """
          Remove a model or a list of models from the list of models
keep keep keep keep replace keep keep keep keep keep
 Fixed #19689 -- Renamed `Model._meta.module_name` to `model_name`. 
django/contrib/comments/moderation.py