code: def setup_ex(self, init_net, exit_net):
      exit_net.CloseBlobsQueue([self._wrapper.queue()], 0)
  
imports: from caffe2.python import core, dataio
  from caffe2.python.task import TaskGroup
  import logging
label_desc: Use image node_id 2 for calling the _QueueWriter obj's underlying member method code with example usage: obj.setup_ex(init_net, exit_net) without return types