class PromQLEngine {

    public Query newInstantQuery(String qs, Instant time) {
        Expr expr = Parser.parseExpr(qs);
        Query qry = newQuery(expr, time, time, Duration.ZERO);
        qry.setQ(qs);
        return qry;
    }

    public  PromQLEngine(Storage storage);
    public  PromQLEngine(Storage storage, EngineOptions options);

}