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 = LimeTextExplainer()
      explainer.build_explainer(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_text_explainer.py
imports: import os
  import unittest
  from lime.lime_text import LimeTextExplainer
  from xai.explainer.explainer_exceptions import ExplainerUninitializedError
  from xai.explainer.text.lime_text_explainer import LimeTextExplainer
label_desc: Use image node_id 4 for calling the TestLimeTextExplainer obj's underlying member method code with example usage: obj.test_save_explainer() without return types