code: def add_show_subparser(subparsers):
      """Add parser for `show`."""
      show_msg = (
          "Usage examples:\n"
          "To show all tag-sets in a SavedModel:\n"
          "$saved_model_cli show --dir /tmp/saved_model\n\n"
          "To show all available SignatureDef keys in a "
          "MetaGraphDef specified by its tag-set:\n"
          "$saved_model_cli show --dir /tmp/saved_model --tag_set serve\n\n"
          "For a MetaGraphDef with multiple tags in the tag-set, all tags must be "
          "passed in, separated by ';':\n"
          "$saved_model_cli show --dir /tmp/saved_model --tag_set serve,gpu\n\n"
          "To show all inputs and outputs TensorInfo for a specific"
          " SignatureDef specified by the SignatureDef key in a"
          " MetaGraph.\n"
          "$saved_model_cli show --dir /tmp/saved_model --tag_set serve"
          " --signature_def serving_default\n\n"
          "To show all ops in a MetaGraph.\n"
          "$saved_model_cli show --dir /tmp/saved_model --tag_set serve"
          " --list_ops\n\n"
          "To show all available information in the SavedModel:\n"
          "$saved_model_cli show --dir /tmp/saved_model --all"
      )
      parser_show = subparsers.add_parser(
          "show",
          description=show_msg,
          formatter_class=argparse.RawTextHelpFormatter,
      )
      parser_show.set_defaults(func=show)
  
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 30 for calling a global function with example usage: add_show_subparser(subparsers) without return types