code: def store_many_vectors(self, hash_name, bucket_keys, vs, data):
          
          if data is None:
              data = itertools.repeat(data)
          for v, k, d in zip(vs, bucket_keys, data):
              self.store_vector(hash_name, k, v, d)
docs: Store a batch of vectors.
          Stores vector and JSON-serializable data in bucket with specified key.