{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"tt::Leaf::Ident(ident)"}]}
                    tt::Leaf::Ident(ident) if ident.sym == sym::crate_ => {
                TtElement::Leaf(leaf) => match leaf {
                        // We simply produce identifier `$crate` here. And it will be resolved when lowering ast to Path.