code: def replicator_or_skip(self, replicator_fn, use_function):
      replicator = replicator_fn()
      if not use_function and isinstance(
          replicator, snt_replicator.TpuReplicator
      ):
          self.skipTest("TpuReplicator does not support eager mode.")
      return replicator
  
imports: import os
  from absl import logging
  from absl.testing import absltest
  from absl.testing import parameterized
  from sonnet.src import test_utils
  from sonnet.src.conformance import goldens
  from sonnet.src.distribute import replicator
  from sonnet.src.distribute import replicator_test_utils
  import tensorflow
  import tree
label_desc: Use image node_id 1 for calling the ReplicatorCheckpointTest obj's underlying member method code with example usage: obj.replicator_or_skip(replicator_fn, use_function) and returns: replicator