code: def setUpClass(cls):
      cls.tmp_dir = tf.test.get_temp_dir()
      shutil.rmtree(cls.tmp_dir)
      os.mkdir(cls.tmp_dir)
  
file_path: tensor2tensor/tensor2tensor/data_generators/timeseries_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import shutil
  from tensor2tensor.data_generators import timeseries
  import tensorflow.compat.v1
  from tensorflow.compat.v1 import estimator
label_desc: Use image node_id 1 for calling the TimeseriesTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types