code: def _serialize(
      model_obj: "tensorflow.keras.Model", dir_or_file_path: str
  ) -> None:
      _get_tf_keras().models.save_model(
          model_obj, dir_or_file_path, include_optimizer=True
      )
  
imports: import os
  import shutil
  import sys
  from typing import TYPE_CHECKING, Any, ClassVar, Generic, List, Optional, Type, TypeVar, Union, cast
  import wandb
  from wandb import util
  from wandb.sdk.lib import runid
  from wandb.sdk.lib.hashutil import md5_file_hex
  from wandb.sdk.lib.paths import LogicalPath
  from ._private import MEDIA_TMP
  from .base_types.wb_value import WBValue
label_desc: Use image node_id 3 for calling the _TensorflowKerasSavedModel obj's underlying member method code with example usage: obj._serialize(model_obj, dir_or_file_path) without return types