code: def keras():
      return TFKerasUtil.keras_fn()()
  
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 5 for calling the TFKerasUtil obj's underlying member method code with example usage: obj.keras() and returns: TFKerasUtil