class_docstr: Test markdown.extensions.Extension. 
class_docstr_tok: ["Test","markdown.extensions.Extension","."]
code: def testGetConfig(self):
      self.assertEqual(self.ext.getConfig("foo"), "bar")
  
imports: import unittest
  import markdown
label_desc: Use image node_id 2 for calling the TestExtensionClass obj's underlying member method code with example usage: obj.testGetConfig() without return types