Is there any way to express this idea in C#? (Basically a generic type of a generic type)?
public static class ExtensionSpike
{
public static IEnumerable<T> Where<TCollection<T>>(this TCollection<T> sourceCollection, Expression<Func<T, bool>> expr)
where TCollection : class, IEnumerable<T>, INotifyCollectionChanged
{
throw new NotImplementedException();
}
}