code: def get_prefix(self, key_prefix, **kwargs):
          
          range_response = self.get_prefix_response(key_prefix, **kwargs)
          for kv in range_response.kvs:
              yield (kv.value, KVMetadata(kv, range_response.header))
docs: Get a range of keys with a prefix.
  
          :param key_prefix: first key in range
          :param keys_only: if True, retrieve only the keys, not the values
  
          :returns: sequence of (value, metadata) tuples