class Stringify {
    private final Supplier<String> supplier;

    private Stringify(Supplier<String> supplier){
        this.supplier = supplier;
    }

    public static Stringify it(Supplier<String> supplier) {
        return new Stringify(supplier);
    }

    @Override
    public String toString(){
        return this.supplier.get();
    }
}

log.info("{}", Stringify.it(() -> ""));