{"ast_node_type":"other","tokens":[{"end":119,"kind":"keyword","start":0,"text":".skip_while(|tt|"}]}
                .skip_while(|tt| !matches!(tt, TtElement::Leaf(tt::Leaf::Ident(tt::Ident { sym, ..} )) if *sym == key))
            let name = tt.iter()
                .nth(2);