namespace System.Collections.Immutable
{
    [DefaultMember("Item")]
    public sealed class ImmutableList<T> : ICollection<T>, IEnumerable, IEnumerable<T>, IList<T>, IReadOnlyCollection<T>, IReadOnlyList<T>, ICollection, IList, IImmutableList<T>
    {
        [EditorBrowsable(EditorBrowsableState.Advanced)]
        public struct Enumerator : IEnumerator, IEnumerator<T>, IDisposable
        {
            public T Current { get; }
        }
    }
}