{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"//"}]}
        // the outer macro. See ui/macros/macro-of-higher-order.rs where $y:$fragment in the
        // This can only happen when checking a nested macro because this LHS is then in the RHS of
        // LHS of the nested macro (and RHS of the outer macro) is parsed as MetaVar(y) Colon