code: def destroy_group(self, group_name="default"):
      col.destroy_collective_group(group_name)
      return True
  
imports: import cupy
  import logging
  import ray
  import ray.util.collective
  from ray.util.collective.types import Backend, ReduceOp
  from ray.util.collective.collective_group.nccl_util import get_num_gpus
  import torch
label_desc: Use image node_id 14 for calling the Worker obj's underlying member method code with example usage: obj.destroy_group(group_name) and returns: True