{"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
        let match_expr_range = match_expr.syntax().text_range();
        let last_arm_range = last_arm.syntax().text_range();
        if last_arm_range.end() <= ctx.offset() && ctx.offset() < match_expr_range.end() {