code: protected void purgeZeroObject(Long bucketId, Long objectId, AllocationPoint point, boolean copyback) {
          allocationsMap.remove(objectId);
  
          memoryHandler.purgeZeroObject(bucketId, objectId, point, copyback);
  
          getFlowController().getEventsProvider().storeEvent(point.getLastWriteEvent());
          getFlowController().getEventsProvider().storeEvent(point.getLastReadEvent());
      }
docs: This method frees native system memory referenced by specified tracking id/AllocationPoint
  
  @param bucketId
  @param objectId
  @param point
  @param copyback