docs: def prefetchDeclarativeIds(self, Declarative, count) -> Deferred:
          """ Get PG Sequence Generator
  
          A PostGreSQL sequence generator returns a chunk of IDs for the given
          declarative.
  
          :return: A generator that will provide the IDs
          :rtype: an iterator, yielding the numbers to assign
  
          """
          return self._dbConn.prefetchDeclarativeIds(Declarative=Declarative, count=count)