code: def setUp(self):
      super().setUp()
      launch.worker_manager._HAS_MAIN_MANAGER = False
  
imports: from absl.testing import absltest
  from absl.testing import flagsaver
  from absl.testing import parameterized
  import launchpad
  from launchpad import program
  from launchpad.launch.test_multi_processing import launch
  from launchpad.nodes.python import local_multi_processing
  from launchpad.nodes.python import node
  from launchpad.program_stopper import program_stopper
label_desc: Use image node_id 1 for calling the LaunchTest obj's underlying member method code with example usage: obj.setUp() without return types