fail-safe code

public abstract class Tryable<T>{
    protected abstract T tryThis();
    public T doIt(){
        try {
            return tryThis();
        } catch (Throwable e) {
            e.printStackTrace();
            return null;
        }
    }
}



systemEventsLogger.logPaymentError("approval_url not fount in responce", userId, //
                    clientIps,
                    new ImmutableMap.Builder<String, String>()//
                    .put("payment", Strings.nullToEmpty(new Tryable<String>() {
                        @Override
                        public String tryThis() {
                            return payment.toJSON();
                        }
                    }.doIt()))//
                    .put("createdPayment", Strings.nullToEmpty(new Tryable<String>() {
                        @Override
                        public String tryThis() {
                            return createdPayment.toJSON();
                        }
                    }.doIt()))//
                    .put("lastResponse", Strings.nullToEmpty(Payment.getLastResponse()))//
                    .build());