code: def runTest(self):
      pass
  
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 4 for calling the DummyInput obj's underlying member method code with example usage: obj.runTest() without return types