code: def start_new(cls, estimator, inputs):
          
  
          local_mode = estimator.sagemaker_session.local_mode
          model_uri = estimator.model_uri
  
          # Allow file:// input only in local mode
          if cls._is_local_channel(inputs) or cls._is_local_channel(model_uri):
              if not local_mode:
                  raise ValueError('File URIs are supported in local mode only. Please use a S3 URI instead.')
  
          config = _Job._load_config(inputs, estimator)
  
          if estimator.hyperparameters() is not None:
              hyperparameters = {str(k): str(v) for (k, v) in estimator.hyperparameters().items()}
  
          train_args = config.copy()
          train_args['input_mode'] = estimator.input_mode
          train_args['job_name'] = estimator._current_job_name
          train_args['hyperparameters'] = hyperparameters
          train_args['tags'] = estimator.tags
          train_args['metric_definitions'] = estimator.metric_definitions
  
          if estimator.enable_network_isolation():
              train_args['enable_network_isolation'] = True
  
          if estimator.encrypt_inter_container_traffic:
              train_args['encrypt_inter_container_traffic'] = True
  
          if isinstance(estimator, sagemaker.algorithm.AlgorithmEstimator):
              train_args['algorithm_arn'] = estimator.algorithm_arn
          else:
              train_args['image'] = estimator.train_image()
  
          estimator.sagemaker_session.train(**train_args)
  
          return cls(estimator.sagemaker_session, estimator._current_job_name)
docs: Create a new Amazon SageMaker training job from the estimator.
  
          Args:
              estimator (sagemaker.estimator.EstimatorBase): Estimator object created by the user.
              inputs (str): Parameters used when called  :meth:`~sagemaker.estimator.EstimatorBase.fit`.
  
          Returns:
              sagemaker.estimator._TrainingJob: Constructed object that captures all information about the started
              training job.