class_docstr: Unit test class for testing the libsvm sklearn converter.
code: def test_evaluation_stress_test(self):
      self._test_evaluation(allow_slow=True)
  
imports: import pandas
  import tempfile
  import random
  import unittest
  import pytest
  from coremltools._deps import _HAS_LIBSVM, MSG_LIBSVM_NOT_FOUND, _HAS_SKLEARN, MSG_SKLEARN_NOT_FOUND
  from coremltools.models.utils import evaluate_regressor, _macos_version, _is_macos
label_desc: Use image node_id 5 for calling the NuSVRLibSVMTest obj's underlying member method code with example usage: obj.test_evaluation_stress_test() without return types