{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"if"}]}
                    if let ImplTraitId::TypeAliasImplTrait(alias_id, _) =
                if let TyKind::OpaqueType(id, _) = ty.kind(Interner) {
                        self.db.lookup_intern_impl_trait_id((*id).into())