code: def maybe_saved_model_directory(export_dir):
      """Checks whether the provided export directory could contain a SavedModel.
  
      Note that the method does not load any data by itself. If the method returns
      `false`, the export directory definitely does not contain a SavedModel. If the
      method returns `true`, the export directory may contain a SavedModel but
      provides no guarantee that it can be loaded.
  
      Args:
        export_dir: Absolute string path to possible export location. For example,
                    '/my/foo/model'.
  
      Returns:
        True if the export directory contains SavedModel files, False otherwise.
      """
      txt_path = file_io.join(
          export_dir, constants.SAVED_MODEL_FILENAME_PBTXT
      )
      pb_path = file_io.join(
          export_dir, constants.SAVED_MODEL_FILENAME_PB
      )
      return file_io.file_exists(txt_path) or file_io.file_exists(
          pb_path
      )
  
imports: import os
  import sys
  from google.protobuf import message
  from google.protobuf import text_format
  from tensorflow.core.framework import graph_debug_info_pb2
  from tensorflow.core.protobuf import meta_graph_pb2
  from tensorflow.core.protobuf import saved_model_pb2
  from tensorflow.python.framework import ops
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.saved_model import constants
  from tensorflow.python.saved_model import path_helpers
  from tensorflow.python.saved_model import signature_def_utils
  from tensorflow.python.saved_model import utils_impl
  from tensorflow.python.saved_model.pywrap_saved_model import metrics
  from tensorflow.python.training import saver
  from tensorflow.python.util import compat
  from tensorflow.python.util import deprecation
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 9 for calling a global function with example usage: maybe_saved_model_directory(export_dir) and returns: unknown