{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
        let Some(tree) = tscx.stack.last_mut().unwrap().next() else {
        // If it still has a TokenTree we have not looked at yet, use that tree.
            // This else-case never produces a value for `tree` (it `continue`s or `return`s).