code: def limit(self, count):
          
          query = query_mod.Query(self)
          return query.limit(count)
docs: Create a limited query with this collection as parent.
  
          See
          :meth:`~.firestore_v1beta1.query.Query.limit` for
          more information on this method.
  
          Args:
              count (int): Maximum number of documents to return that match
                  the query.
  
          Returns:
              ~.firestore_v1beta1.query.Query: A limited query.