code: def test_placement_group_create_only(
      ray_start_cluster, execution_number
  ):
      """PG mini integration test without remove_placement_group
  
      When there are failures, this will help identifying if issues are
      from removal or not.
      """
      run_mini_integration_test(
          ray_start_cluster, pg_removal=False, num_pgs=333
      )
  
file_path: ray/python/ray/tests/test_placement_group_mini_integration.py
imports: import pytest
  import sys
  import time
  from random import random
  import ray
  import ray.cluster_utils
  from ray._private.test_utils import wait_for_condition
  from ray.util.placement_group import placement_group, remove_placement_group
  from ray.util.scheduling_strategies import PlacementGroupSchedulingStrategy
label_desc: Use image node_id 2 for calling a global function with example usage: test_placement_group_create_only(ray_start_cluster, execution_number) without return types