System.Collections.Generic.ReferenceEqualityComparer
namespace System.Collections.Generic
{
internal sealed class ReferenceEqualityComparer : IEqualityComparer<object>, IEqualityComparer
{
public static System.Collections.Generic.ReferenceEqualityComparer Instance { get; }
public new bool Equals(object x, object y);
public int GetHashCode(object obj);
}
}