{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"self.arena.alloc_from_iter(tys.iter().map(|ty|"}]}
                self.arena.alloc_from_iter(tys.iter().map(|ty| self.lower_ty_direct(ty, itctx))),
            TyKind::Tup(tys) => hir::TyKind::Tup(
            ),