code: def add_child(self, child):
          '''Add child node, and copy all options to it'''
          super(RootNode, self).add_child(child)
          child.attr_wrapper = self.attr_wrappef add_child(self, child):
          '''Add child node, and copy all options to it'''
          super(RootNode, self).add_child(child)
          child.attr_wrapper = self.attr_wrapper
docs: Add child node, and copy all options to it