code: def fill_suite(integration_nnet_suite):
      integration_nnet_suite.addTests(
          unittest.TestLoader().loadTestsFromModule(
              utils_metric_integration_tests
          )
      )
  
imports: import unittest
  import matplotlib
  from pyclustering.tests.suite_holder import suite_holder
  from pyclustering.utils.tests.integration import it_metric
label_desc: Use image node_id 2 for calling the utils_integration_tests obj's underlying member method code with example usage: obj.fill_suite(integration_nnet_suite) without return types