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#if FAT
using System.Collections.Generic;
namespace LinqInternal.Collections
{
internal interface IExtendedSet<T> : IReadOnlySet<T>, ISet<T>
{
IReadOnlySet<T> AsReadOnly { get; }
new int Count { get; }
new bool Add(T item);
new bool IsProperSubsetOf(IEnumerable<T> other);
new bool IsProperSupersetOf(IEnumerable<T> other);
new bool IsSubsetOf(IEnumerable<T> other);
new bool IsSupersetOf(IEnumerable<T> other);
new bool Overlaps(IEnumerable<T> other);
bool Remove(T item, IEqualityComparer<T> comparer);
new bool SetEquals(IEnumerable<T> other);
}
}
#endif