{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"ConstArg"}]}
        ConstArg { hir_id: self.next_id(), kind: hir::ConstArgKind::Anon(lowered_anon) }
        let lowered_anon = self.lower_anon_const_to_anon_const(anon);
    }