code: def __call__(self, store):
      with store._lock:
          if store._current_barrier is None:
              store._current_barrier = _BarrierImpl(store._world_size)
      store._current_barrier()
      # Once the barrier has been completed, just clean it
      with store._lock:
          store._current_barrier = None
      return Barrier.BarrierResult()
  
imports: import enum
  import threading
  from cupyx.distributed import _klv_utils
label_desc: Use image node_id 3 for calling the Barrier obj's underlying member method code with example usage: obj.__call__(store) and returns: Barrier