code: def move_to_placeholder(self, placeholder, sort_order=None):
          
          qs = self.all()  # Get clone
          for item in qs:
              # Change the item directly in the resultset.
              item.move_to_placeholder(placeholder, sort_order=sort_order)
              if sort_order is not None:
                  sort_order += 1
  
          return qs
docs: .. versionadded: 1.0.2 Move the entire queryset to a new object.
  
          Returns a queryset with the newly created objects.