T result = operation.get();
                long responseTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);
                onSuccess(responseTime);
                return result;
            } catch (Exception e) {
                long responseTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);
                onFailure(e, responseTime);
                if (e instanceof CIFSException) {