protected virtual void MirrorRemove(IEnumerable <TSource> items, int count)
{
if (count == 1)
{
_items.Remove(items.First());
}
else
{
using (_items.BulkUpdate())
{
foreach (TSource item in items)
{
_items.Remove(item);
}
}
}
}
protected virtual void MirrorReset(IEnumerable <TSource> source)
{
using (_items.BulkUpdate())
_items.ReplaceAll(source.Select(item => _sourceToTarget(item)));
}