public new void AddRange(IEnumerable <T> collection)
{
var i = Count;
base.AddRange(collection);
CollectionAdd?.Invoke(collection, Enumerable.Range(i, collection.Count()));
}
public new void InsertRange(int index, IEnumerable <T> collection)
{
base.InsertRange(index, collection);
CollectionAdd?.Invoke(collection, Enumerable.Range(index, collection.Count()));
}
