private void InsertImplCore(int index, T item)
{
ListTImplementation.Insert(index, item);
Version++;
OnItemAddedCore(item);
}
private void RemoveCoreImpl(int index)
{
var item = ListTImplementation[index];
ListTImplementation.RemoveAt(index);
Version++;
OnItemRemovedCore(item);
}
private bool RemoveImpl(T item, int index)
{
if (index == -1)
{
index = ListTImplementation.IndexOf(item);
}
RemoveItem(index);
return(index != -1);
}
