code: def serialize_model(*args, **kwargs):
      def serialize_keras_model(x):
          return _serialize_keras_model(
              x, TFKerasUtil.keras().models.save_model
          )
  
      return serialize_keras_model(*args, **kwargs)
  
imports: import io
  from packaging import version
  import h5py
  import numpy
  import tensorflow
  from horovod.runner.common.util import codec
  from horovod.spark.common import constants, params
  from horovod.spark.keras import optimizer, remote
label_desc: Use image node_id 9 for calling the TFKerasUtil obj's underlying member method code with example usage: obj.serialize_model() and returns: serialize_keras_model, _serialize_keras_model