code: def __init__(self, _):
      super().__init__()
      test_utils.TestCase.__init__(self)
  
imports: from absl.testing import parameterized
  from sonnet.src import base
  from sonnet.src import mixed_precision
  from sonnet.src import test_utils
  import tensorflow
  import tree
label_desc: Use image node_id 1 to create a new DummyInput object from inherited base classes: test_utils with example: obj = DummyInput(_)