code: def __init__(self):
      self.call_log = []
  
file_path: tensorflow-upstream/tensorflow/tools/common/traverse_test.py
imports: from tensorflow.python.platform import googletest
  from tensorflow.tools.common import test_module1
  from tensorflow.tools.common import test_module2
  from tensorflow.tools.common import traverse
label_desc: Use image node_id 1 to create a new TestVisitor object from inherited base classes: object with example: obj = TestVisitor()