code: def save(self, *args, **kwargs):
          
          # It is vital to track the changes of the parent associated with a forum in order to
          # maintain counters up-to-date and to trigger other operations such as permissions updates.
          old_instance = None
          if self.pk:
              old_instance = self.__class__._default_manager.get(pk=self.pk)
  
          # Update the slug field
          self.slug = slugify(force_text(self.name), allow_unicode=True)
  
          # Do the save
          super().save(*args, **kwargs)
  
          # If any change has been made to the forum parent, trigger the update of the counters
          if old_instance and old_instance.parent != self.parent:
              self.update_trackers()
              # Trigger the 'forum_moved' signal
              signals.forum_moved.send(sender=self, previous_parent=old_instance.parent)
docs: Saves the forum instance.