code: def prepare_image(inputs, hparams, name=None):
      """Prepare image."""
      # TODO(trandustin): This is a legacy function. Remove its usage.
      del hparams, name  # unused arg
      return inputs
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from six.moves import range
  from tensor2tensor.layers import common_attention
  from tensor2tensor.layers import common_layers
  from tensor2tensor.utils import expert_utils
  import tensorflow.compat.v1
  from tensorflow.compat.v1 import estimator
label_desc: Use image node_id 17 for calling a global function with example usage: prepare_image(inputs, hparams, name) and returns: inputs