public ValueTracker GetChangedPropertyList<T>(ChangeTracker changeTracker)
        {
            var changedPropList =
                changeTracker.Entries().Where(entry =>
                        entry.Entity.GetType() == typeof(T)).SelectMany(entry => entry.Properties)
                    .Where(entry => entry.IsModified).Select(entry =>
                        new ValueTrackerItem(entry.Metadata.Name, entry.OriginalValue, entry.CurrentValue));
            return new ValueTracker {Changes = changedPropList.ToList()};
        }