code: def postinit(self, func=None, args=None, keywords=None):
          
          self.func = func
          self.args = args
          self.keywords = keywords
docs: Do some setup after initialisation.
  
          :param func: What is being called.
          :type func: NodeNG or None
  
          :param args: The positional arguments being given to the call.
          :type args: list(NodeNG) or None
  
          :param keywords: The keyword arguments being given to the call.
          :type keywords: list(NodeNG) or None