parameters: (self, node)
docstring: add all the .ts file into self.lang
docstring_summary: add all the .ts file into self.lang
docstring_tokens: add all the . ts file into self . lang
function: def add_lang(self, node):
  	"""add all the .ts file into self.lang"""
  	self.lang = self.to_list(getattr(self, 'lang', [])) + [node]
function_tokens: def add_lang ( self , node ) : self . lang = self . to_list ( getattr ( self , 'lang' , [ ] ) ) + [ node ]