code: def serialize_pipeline(pipeline):
      try:
          return pipeline.serialize()
      except RuntimeError as e:
          raise RuntimeError(
              "Error during pipeline initialization. Note that some operators "
              "(e.g. Python Operators) cannot be used with "
              "TensorFlow Dataset API and DALIIterator."
          ) from e
  
imports: import sys
  import tensorflow
  from tensorflow.python.data.util import nest
  from tensorflow.python.framework import tensor_shape
  from nvidia.dali import types
  from nvidia.dali import internal
  from nvidia.dali.external_source import _is_external_source, _has_external_source
  from nvidia.dali.external_source import _is_external_source_with_callback
  from nvidia.dali._utils.external_source_impl import _get_generator_from_source_desc
  from nvidia.dali._utils.external_source_impl import _cycle_enabled
  from distutils.version import LooseVersion
  import warnings
  from nvidia.dali_tf_plugin import dali_tf_plugin
  from collections.abc import Mapping, Iterable
label_desc: Use image node_id 1 for calling a global function with example usage: serialize_pipeline(pipeline) and returns: pipeline