code: def get_lock(self):
      return DummyContextManager()
  
imports: import unittest
  import uuid
  import os
  import time
  import yaml
  from studio.pubsub_queue import PubsubQueue
  from studio.queues.sqs_queue import SQSQueue
  from studio.queues.local_queue import LocalQueue
  from studio.extra_util import has_aws_credentials
  from studio import model
  from studio.util import logs
label_desc: Use image node_id 5 for calling the QueueTest obj's underlying member method code with example usage: obj.get_lock() and returns: DummyContextManager