class_docstr: Base class for all other splitter.
code: def test_pair(
      self, entry: DataEntry, prediction_length: int, offset: int = 0
  ) -> Tuple[DataEntry, DataEntry]:
      pass
  
imports: from abc import ABC, abstractmethod
  from dataclasses import dataclass
  from typing import Generator, Optional, Tuple
  import pandas
  from gluonts.dataset import Dataset, DataEntry
  from gluonts.dataset.field_names import FieldName
label_desc: Use image node_id 2 for calling the AbstractBaseSplitter obj's underlying member method code with example usage: obj.test_pair(entry, prediction_length, offset) without return types