code: def _sample(self, data_1, data_2, sample_size):
      sample_indices = self._sample_indices(
          sample_size, len(data_1) * len(data_2)
      )
  
      sample = [
          (data_1[id_1], data_2[id_2]) for id_1, id_2 in sample_indices
      ]
  
      return sample
  
imports: from __future__ import annotations
  import logging
  import random
  from abc import ABC, abstractmethod
  from typing import TYPE_CHECKING, overload
  from warnings import warn
  import numpy
  import numpy.typing
  import sklearn.linear_model
  import dedupe.core
  import dedupe.training
label_desc: Use image node_id 5 for calling the RecordLinkBlockLearner obj's underlying member method code with example usage: obj._sample(data_1, data_2, sample_size) and returns: sample