code: def test_sync_with_empty_lists():
      """Test that synchronization of states can be enabled and disabled for compute."""
      pytest.pool.map(_test_sync_with_empty_lists, range(NUM_PROCESSES))
  
imports: import os
  import sys
  from copy import deepcopy
  from functools import partial
  import pytest
  import torch
  from torch import tensor
  from torchmetrics import Metric
  from torchmetrics.utilities.distributed import gather_all_tensors
  from torchmetrics.utilities.exceptions import TorchMetricsUserError
  from unittests import NUM_PROCESSES
  from unittests.helpers import seed_all
  from unittests.helpers.testers import DummyListMetric, DummyMetric, DummyMetricSum
label_desc: Use image node_id 16 for calling a global function with example usage: test_sync_with_empty_lists() without return types