code: def _get_runner(self):
      return _PairwiseSampler(
          dataset=self._dataset,
          batch_size=self._batch_size,
          q=self._q,
          chronological=self._chronological,
      )
  
file_path: openrec/openrec/tf1/legacy/utils/samplers/pairwise_sampler.py
imports: from __future__ import print_function
  import numpy
  import random
  from multiprocessing import Process
  from openrec.tf1.legacy.utils.samplers import Sampler
label_desc: Use image node_id 2 for calling the PairwiseSampler obj's underlying member method code with example usage: obj._get_runner() and returns: _PairwiseSampler