def METHOD_NAME():
  def assets_module_fn():
    indices = tf.compat.v1.placeholder(dtype=tf.int64, name="indices")
    table = index_to_string_table_from_file(
        vocabulary_file=vocab_filename, default_value="UNKNOWN")
    outputs = table.lookup(indices)
    hub.add_signature(inputs=indices, outputs=outputs)
  return assets_module_fn