code: def test_triggerbyclock(self):
      class MyConfigGenerator(ConfigGenerator):
          def __init__(self, sweetpoint):
              self.sweetpoint = sweetpoint
              super().__init__()
  
          def genConfig(self):
              return self.sweetpoint
  
          @triggerbyclock(2)
          def update_sweetpoint(self):
              self.sweetpoint += 1
  
      mycg = MyConfigGenerator(5)
      time.sleep(4)
      assert mycg.genConfig() > 5
  
file_path: BigDL/python/chronos/test/bigdl/chronos/aiops/test_config_generator.py
imports: import pytest
  from unittest import TestCase
  from bigdl.chronos.aiops.config_generator import ConfigGenerator, triggerbyclock
  import time
  from ..None import op_diff_set_all
label_desc: Use image node_id 3 for calling the TestConfigGenerator obj's underlying member method code with example usage: obj.test_triggerbyclock() and returns: self