code: def identity():
      """Returns identity `Encoder`."""
      return core_encoder.EncoderComposer(
          stages_impl.IdentityEncodingStage()
      ).make()
  
file_path: model-optimization/tensorflow_model_optimization/python/core/internal/tensor_encoding/encoders/common_encoders.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.core import core_encoder
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.core import gather_encoder
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.core import simple_encoder
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.stages import stages_impl
label_desc: Use image node_id 3 for calling a global function with example usage: identity() and returns: core_encoder