{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
        // FIXME: requires db, more importantly this requires name resolution so we would need to
    fn expand_expr(&mut self, self_: &Self::TokenStream) -> Result<Self::TokenStream, ()> {
        // eagerly expand this proc-macro, but we can't know that this proc-macro is eager until we