code: def testParallelWorkers(self):
      workspace.ResetWorkspace()
  
      queue = create_queue()
      dummy_worker = create_worker(queue, str)
      worker_coordinator = parallel_workers.init_workers(dummy_worker)
      worker_coordinator.start()
  
      for _ in range(10):
          value = dequeue_value(queue)
          self.assertTrue(
              value in [b"0", b"1"],
              "Got unexpected value " + str(value),
          )
  
      self.assertTrue(worker_coordinator.stop())
  
file_path: pytorch/caffe2/python/parallel_workers_test.py
imports: import unittest
  from caffe2.python import workspace, core
  import caffe2.python.parallel_workers
label_desc: Use image node_id 1 for calling the ParallelWorkersTest obj's underlying member method code with example usage: obj.testParallelWorkers() without return types