original_docstring: Callback registering it was called at least once.
  
          
docstring: Callback registering it was called at least once.
docstring_tokens: Callback registering it was called at least once .
code: def callback(self, change):
          """Callback registering it was called at least once.
  
          """
          self.called = True
code_tokens: def callback ( self , change ) : self . called = True
short_docstring: Callback registering it was called at least once.
short_docstring_tokens: Callback registering it was called at least once .
comment: """Callback registering it was called at least once.
  
          """