code: def _replay_spec():
      output = phoenix_spec_pb2.PhoenixSpec()
      output.replay.CopyFrom(phoenix_spec_pb2.ArchitectureReplay())
      return output
  
imports: from absl.testing import parameterized
  from model_search import block_builder
  from model_search import hparam
  from model_search.architecture import architecture_utils
  from model_search.metadata import trial
  from model_search.proto import phoenix_spec_pb2
  from model_search.proto import transfer_learning_spec_pb2
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 2 for calling a global function with example usage: _replay_spec() and returns: output