{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"&TyKind::Adt(AdtId(adt),"}]}
                &TyKind::Adt(AdtId(adt), ref substs) => {
                TyKind::Ref(.., rty) => single(rty.clone()),
                    if is_box(self.db, adt) {