code: def test_async_sleep(self):
      self._check_sleep(sleep_op.AsyncSleep)
  
file_path: tensorflow-upstream/tensorflow/examples/custom_ops_doc/sleep/sleep_test.py
imports: import time
  import tensorflow
  from tensorflow.examples.custom_ops_doc.sleep import sleep_op
  from tensorflow.python.framework import errors_impl
label_desc: Use image node_id 3 for calling the SleepTest obj's underlying member method code with example usage: obj.test_async_sleep() without return types