public Change <TDest> OfType <TDest>() where TDest : class
{
return(new Change <TDest>
{
Modified = Modified?.OfType <TDest>().ToList(),
Added = Added?.OfType <TDest>().ToList(),
Removed = Removed?.OfType <TDest>().ToList(),
NotModified = NotModified?.OfType <TDest>().ToList(),
});
}