code: def _get_filter_ids(cls, request):
          
          id_query = request.url.query.get('id', None)
  
          if id_query is None:
              return None
  
          filter_ids = id_query.split(',')
          for filter_id in filter_ids:
              cls._validate_id(filter_id)
  
          return filter_ids
docs: Parses the `id` filter paramter from the url query.