code: def testCoreInterfaceIntInputData(self):
      cure_instance = cure(
          [[1], [2], [3], [20], [21], [22]], 2, ccore=True
      )
      cure_instance.process()
      assert len(cure_instance.get_clusters()) == 2
  
imports: import unittest
  import matplotlib
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, FCPS_SAMPLES
  from pyclustering.cluster.cure import cure
  from pyclustering.cluster.tests.cure_templates import CureTestTemplates
  from pyclustering.core.tests import remove_library
label_desc: Use image node_id 17 for calling the CureIntegrationTest obj's underlying member method code with example usage: obj.testCoreInterfaceIntInputData() without return types