code: def add_scan_subparser(subparsers):
      """Add parser for `scan`."""
      scan_msg = (
          "Usage example:\n"
          "To scan for default denylisted ops in SavedModel:\n"
          "$saved_model_cli scan --dir /tmp/saved_model\n"
          "To scan for a specific set of ops in SavedModel:\n"
          "$saved_model_cli scan --dir /tmp/saved_model --op_denylist "
          "OpName,OpName,OpName\n"
          "To scan a specific MetaGraph, pass in --tag_set\n"
      )
      parser_scan = subparsers.add_parser(
          "scan",
          description=scan_msg,
          formatter_class=argparse.RawTextHelpFormatter,
      )
      parser_scan.set_defaults(func=scan)
  
imports: import argparse
  import platform
  import ast
  import os
  import re
  from absl import app
  from absl import flags
  from absl.flags import argparse_flags
  import numpy
  from tensorflow.core.example import example_pb2
  from tensorflow.core.framework import types_pb2
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.python.client import session
  from tensorflow.python.debug.wrappers import local_cli_wrapper
  from tensorflow.python.eager import def_function
  from tensorflow.python.eager import function
  from tensorflow.python.framework import meta_graph
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.saved_model import load
  from tensorflow.python.saved_model import loader
  from tensorflow.python.saved_model import save
  from tensorflow.python.saved_model import signature_constants
  from tensorflow.python.tools import saved_model_aot_compile
  from tensorflow.python.tools import saved_model_utils
  from tensorflow.python.tpu import tpu
  from tensorflow.python.util.compat import collections_abc
label_desc: Use image node_id 32 for calling a global function with example usage: add_scan_subparser(subparsers) without return types