code: def test_starmap(pool):
      def f(*args):
          return args
  
      args = [tuple(range(i)) for i in range(100)]
      assert pool.starmap(f, args) == args
      assert pool.starmap(lambda x, y: x + y, zip([1, 2], [3, 4])) == [
          4,
          6,
      ]
  
imports: import os
  import sys
  import platform
  import pytest
  import tempfile
  import time
  import random
  from collections import defaultdict
  import queue
  import math
  import ray
  from ray._private.test_utils import SignalActor
  from ray.util.multiprocessing import Pool, TimeoutError, JoinableQueue
  from ray.util.joblib import register_ray
  from joblib import parallel_backend, Parallel, delayed
label_desc: Use image node_id 16 for calling a global function with example usage: test_starmap(pool) and returns: args