code: def testDocString(self):
      self.assertIn("TensorFlow", tf.__doc__)
      self.assertNotIn("Wrapper", tf.__doc__)
  
file_path: tensorflow-upstream/tensorflow/tools/api/tests/module_test.py
imports: import pkgutil
  import tensorflow
  from tensorflow.python import tf2
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the ModuleTest obj's underlying member method code with example usage: obj.testDocString() without return types