code: def search_queryset(self):
          
          queryset = self.get_model_class().objects.get_queryset()
  
          if self.get_model_config().list_select_related:
              queryset = queryset.select_related(*self.get_model_config().list_select_related)
  
          return watson.filter(queryset, self.get_search(), ranking=False)
docs: Get search query set