{"ast_node_type":"function","tokens":[{"end":88,"kind":"keyword","start":0,"text":"fn"}]}
    fn append_node_child(self, children: &mut Vec<NodeOrToken<GreenNode, GreenToken>>) {
impl<N: AstNode> ToNodeChild for N {
        children.push((*self.syntax().clone_subtree().green()).to_owned().into());