code: def _createVocabFile(
      self, basename, values=("brain", "salad", "surgery")
  ):
      vocabulary_file = os.path.join(self.get_temp_dir(), basename)
      with open(vocabulary_file, "w") as f:
          f.write("\n".join(values) + "\n")
      return vocabulary_file
  
imports: import os
  from tensorflow.python import tf2
  from tensorflow.python.data.experimental.ops import lookup_ops
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.ops import readers
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import lookup_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the DatasetInitializerTest obj's underlying member method code with example usage: obj._createVocabFile(basename, values) and returns: vocabulary_file