code: def _fetch_values_from_backend(self, offset, limit) -> Row:
      pass
  
file_path: neptune-client/src/neptune/attributes/series/fetchable_series.py
imports: import abc
  from datetime import datetime
  from typing import Dict, Generic, TypeVar, Union
  from neptune.internal.backends.api_model import FloatSeriesValues, StringSeriesValues
label_desc: Use image node_id 1 for calling the FetchableSeries obj's underlying member method code with example usage: obj._fetch_values_from_backend(offset, limit) without return types