code: def test_clustering_sample_02_kmax_correct(self):
      gmeans_test_template().clustering(
          SIMPLE_SAMPLES.SAMPLE_SIMPLE2,
          SIMPLE_ANSWERS.ANSWER_SIMPLE2,
          1,
          True,
          k_max=3,
      )
  
imports: import unittest
  import matplotlib
  from pyclustering.cluster.tests.gmeans_templates import gmeans_test_template
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, SIMPLE_ANSWERS, FCPS_SAMPLES
label_desc: Use image node_id 6 for calling the gmeans_integration_test obj's underlying member method code with example usage: obj.test_clustering_sample_02_kmax_correct() without return types