code: def _inference(self, data):
      pass
  
file_path: serve/ts/tests/unit_tests/model_service/dummy_model/dummy_model_service.py
imports: from ts.model_service.model_service import SingleNodeService
label_desc: Use image node_id 1 for calling the DummyNodeService obj's underlying member method code with example usage: obj._inference(data) without return types