code: def _using_tf():
      """Return true if we're not using the fake TF API stub implementation."""
      return tf.__version__ != "stub"
  
imports: import collections
  import functools
  import imghdr
  import mimetypes
  import os
  import threading
  import numpy
  from werkzeug import wrappers
  from google.protobuf import json_format
  from google.protobuf import text_format
  from tensorboard import context
  from tensorboard.backend.event_processing import plugin_asset_util
  from tensorboard.backend.http_util import Respond
  from tensorboard.compat import tf
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.projector import metadata
  from tensorboard.plugins.projector.projector_config_pb2 import ProjectorConfig
  from tensorboard.util import tb_logging
label_desc: Use image node_id 7 for calling a global function with example usage: _using_tf() and returns: unknown