code: def postinit(self, test=None, body=None, orelse=None):
          
          self.test = test
          self.body = body
          self.orelse = orelse
docs: Do some setup after initialisation.
  
          :param test: The condition that the statement tests.
          :type test: NodeNG or None
  
          :param body: The contents of the block.
          :type body: list(NodeNG) or None
  
          :param orelse: The contents of the ``else`` block.
          :type orelse: list(NodeNG) or None