namespace Foundation
{
    [DefaultMember("Item")]
    [Register("NSOrderedSet", SkipRegistration = true)]
    public sealed class NSOrderedSet<TKey> : NSOrderedSet, IEnumerable, IEnumerable<TKey>
        where TKey, class, INativeObject
    {
        public static NSOrderedSet<TKey> operator -(NSOrderedSet<TKey> first, NSOrderedSet<TKey> second);
    }
}