if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setAvailable_Exists() {
        setAvailable_Exists(null);
    }

    public void setAvailable_Exists(ConditionOptionCall<ExistsQueryBuilder> opLambda) {
        ExistsQueryBuilder builder = regExistsQ("available");
        if (opLambda != null) {