code: def nested_jobs(executor):
      with executor:
          futures = [
              executor.submit(function, 1, 2, i) for i in range(10)
          ]
          all_results = executor.wait(futures)
      return sum(all_results)
  
imports: import os
  import time
  import pytest
  from orion.executor.base import AsyncException, ExecutorClosed, executor_factory
  from orion.executor.dask_backend import HAS_DASK, Dask
  from orion.executor.multiprocess_backend import PoolExecutor
  from orion.executor.ray_backend import HAS_RAY, Ray
  from orion.executor.single_backend import SingleExecutor
label_desc: Use image node_id 19 for calling a global function with example usage: nested_jobs(executor) and returns: sum