oh dear

System.Core/System/Linq/IOrderedEnumerable.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using Cpp2IlInjected;
+
+namespace System.Linq
+{
+	/// <summary>Represents a sorted sequence.</summary>
+	/// <typeparam name="TElement">The type of the elements of the sequence.</typeparam>
+	// Token: 0x0200003B RID: 59
+	[Token(Token = "0x200003B")]
+	public interface IOrderedEnumerable<TElement> : IEnumerable<TElement>, IEnumerable
+	{
+		/// <summary>Performs a subsequent ordering on the elements of an <see cref="T:System.Linq.IOrderedEnumerable`1" /> according to a key.</summary>
+		/// <param name="keySelector">The <see cref="T:System.Func`2" /> used to extract the key for each element.</param>
+		/// <param name="comparer">The <see cref="T:System.Collections.Generic.IComparer`1" /> used to compare keys for placement in the returned sequence.</param>
+		/// <param name="descending">
+		///       <see langword="true" /> to sort the elements in descending order; <see langword="false" /> to sort the elements in ascending order.</param>
+		/// <typeparam name="TKey">The type of the key produced by <paramref name="keySelector" />.</typeparam>
+		/// <returns>An <see cref="T:System.Linq.IOrderedEnumerable`1" /> whose elements are sorted according to a key.</returns>
+		// Token: 0x060001DF RID: 479
+		[Token(Token = "0x60001DF")]
+		[Address(Slot = "0")]
+		IOrderedEnumerable<TElement> CreateOrderedEnumerable<TKey>(Func<TElement, TKey> keySelector, IComparer<TKey> comparer, bool descending);
+	}
+}