private void KeepResult(int sampleSize, TimeSpan value)
        {
            var result = new PerformanceMeasurementResult(
                _objectUnderMeasurement.Name,
                sampleSize,
                value
                );

            Results.Add(result);
        }
        private void KeepResultWithExpectedPoorPerformance(int sampleSize)
        {
            const string message = "Poor performance is expected.";
            var          result  = new PerformanceMeasurementResult(
                _objectUnderMeasurement.Name,
                sampleSize,
                message
                );

            Results.Add(result);
        }