IEqualityComparer.cs

namespace System.Collections.Generic
{
    [__DynamicallyInvokable]
    public interface IEqualityComparer<in T>
    {
        [__DynamicallyInvokable]
        bool Equals(T x, T y);

        [__DynamicallyInvokable]
        int GetHashCode(T obj);
    }
}