code: def test_conversion_from_filesystem(self):
      libsvm_model_path = tempfile.mktemp(suffix="model.libsvm")
      svmutil.svm_save_model(libsvm_model_path, self.libsvm_model)
      # libsvm's save(...) truncates floating points. So it's not going to match self.libsvm_model any more.
      spec = libsvm.convert(
          libsvm_model_path, self.column_names, "target"
      )
      self.assertIsNotNone(spec)
  
imports: import unittest
  import tempfile
  import os
  import pandas
  import random
  import pytest
  import numpy
  from coremltools.models.utils import evaluate_classifier, evaluate_classifier_with_probabilities, _macos_version, _is_macos
  from coremltools._deps import _HAS_LIBSVM, _HAS_SKLEARN
label_desc: Use image node_id 13 for calling the CSVCLibSVMTest obj's underlying member method code with example usage: obj.test_conversion_from_filesystem() without return types