docstr: Test the saving of the explainer
docstr_tok: ["Test","the","saving","of","the","explainer"]
code: def test_save_explainer(self):
      """
      Test the saving of the explainer
      """
      explainer = LimeTabularExplainer()
      explainer.build_explainer(
          np.arange(9).reshape((3, 3)),
          mode=xai.MODE.CLASSIFICATION,
          predict_fn=None,
      )
      explainer.save_explainer(self.save_path)
      self.assertTrue(os.path.exists(self.save_path))
  
file_path: contextual-ai/tests/explainer/test_lime_tabular_explainer.py
imports: import os
  import unittest
  import numpy
  from lime.lime_tabular import LimeTabularExplainer
  import xai
  from xai.explainer.explainer_exceptions import UnsupportedModeError, ExplainerUninitializedError
  from xai.explainer.tabular.lime_tabular_explainer import LimeTabularExplainer
label_desc: Use image node_id 5 for calling the TestLimeTabularExplainer obj's underlying member method code with example usage: obj.test_save_explainer() without return types