{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"self.alloc_expr_desugared(unsafe_arg_new.map_or(Expr::Missing,"}]}
            self.alloc_expr_desugared(unsafe_arg_new.map_or(Expr::Missing, Expr::Path));
        let unsafe_arg_new =
        let unsafe_arg_new =