code: def test_to_request_dict():
      serverless_inference_config_dict = (
          ServerlessInferenceConfig()._to_request_dict()
      )
  
      assert serverless_inference_config_dict == DEFAULT_REQUEST_DICT
  
      serverless_provisioned_concurrency_inference_config_dict = (
          ServerlessInferenceConfig(
              provisioned_concurrency=DEFAULT_PROVISIONED_CONCURRENCY
          )._to_request_dict()
      )
  
      assert (
          serverless_provisioned_concurrency_inference_config_dict
          == PROVISIONED_CONCURRENCY_REQUEST_DICT
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_to_request_dict() without return types