namespace System.Collections.ObjectModel
{
    [DefaultMember("Item")]
    public class ReadOnlyCollection<T> : ICollection<T>, IEnumerable, IEnumerable<T>, IList<T>, IReadOnlyCollection<T>, IReadOnlyList<T>, ICollection, IList
    {
        public static ReadOnlyCollection<T>! Empty { get; }
    }
}

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