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)
      spec = libsvm.convert(libsvm_model_path, "data", "target")
  
imports: import random
  import tempfile
  import unittest
  import pandas
  import pytest
  from coremltools._deps import _HAS_LIBSVM, _HAS_SKLEARN, _SKLEARN_VERSION, MSG_LIBSVM_NOT_FOUND, MSG_SKLEARN_NOT_FOUND
  from coremltools.models.utils import _is_macos, _macos_version, evaluate_classifier, evaluate_classifier_with_probabilities
label_desc: Use image node_id 6 for calling the NuSVCLibSVMTest obj's underlying member method code with example usage: obj.test_conversion_from_filesystem() without return types