code: def num_tasks(self) -> int:
      return 1
  
imports: import logging
  import os
  import typing
  from pathlib import Path
  from typing import Dict, List, Optional, Union
  from ..core.core import Executor, InfoWatcher, Job, R
  from ..core.job_environment import JobEnvironment
  from ..core.utils import DelayedSubmission, UncompletedJobError
label_desc: Use image node_id 3 for calling the DebugJob obj's underlying member method code with example usage: obj.num_tasks() and returns: int