code: def fill_suite(gcolor_tests):
      gcolor_tests.addTests(
          unittest.TestLoader().loadTestsFromModule(
              gcolor_dsatur_unit_tests
          )
      )
      gcolor_tests.addTests(
          unittest.TestLoader().loadTestsFromModule(
              gcolor_hysteresis_unit_tests
          )
      )
      gcolor_tests.addTests(
          unittest.TestLoader().loadTestsFromModule(
              gcolor_sync_unit_tests
          )
      )
  
file_path: pyclustering/pyclustering/gcolor/tests/__init__.py
imports: import unittest
  from pyclustering.tests.suite_holder import suite_holder
  from pyclustering.gcolor.tests import ut_dsatur
  from pyclustering.gcolor.tests import ut_hysteresis
  from pyclustering.gcolor.tests import ut_sync
label_desc: Use image node_id 2 for calling the gcolor_tests obj's underlying member method code with example usage: obj.fill_suite(gcolor_tests) without return types