code: def prepend_multi(self, keys, format=None, persist_to=0, replicate_to=0):
          
          return _Base.prepend_multi(self, keys, format=format,
                                     persist_to=persist_to,
                                     replicate_to=replicate_to)
docs: Prepend to multiple keys. Multi variant of :meth:`prepend`
  
          .. seealso:: :meth:`prepend`, :meth:`upsert_multi`, :meth:`upsert`