code: def transformed_name(key):
      return key + "_xf"
  
file_path: tfx/tfx/examples/mnist/mnist_utils_native_keras_base.py
imports: from typing import List
  import absl
  import tensorflow
  import tensorflow_transform
  from tfx.components.trainer.fn_args_utils import DataAccessor
  from tfx_bsl.tfxio import dataset_options
label_desc: Use image node_id 1 for calling a global function with example usage: transformed_name(key) and returns: unknown