code: def test_register_model_id(self):
      global_model_helper.register_model_id("my_model_0")
      global_model_helper.register_model_id("my_model_1")
  
      with self.assertRaises(AssertionError):
          global_model_helper.register_model_id("my_model_0")
  
file_path: PARL/parl/core/fluid/tests/model_helper_test_fluid.py
imports: import threading
  import unittest
  from parl.core.fluid.model_helper import global_model_helper
  from six.moves.queue import Queue
label_desc: Use image node_id 4 for calling the GlobalModelHelperTest obj's underlying member method code with example usage: obj.test_register_model_id() without return types