oh dear

mscorlib/System/Runtime/CompilerServices/ICriticalNotifyCompletion.cs

@@ -0,0 +1,19 @@
+using System;
+using Cpp2IlInjected;
+
+namespace System.Runtime.CompilerServices
+{
+	/// <summary>Represents an awaiter that schedules continuations when an await operation completes.</summary>
+	// Token: 0x02000540 RID: 1344
+	[Token(Token = "0x2000540")]
+	public interface ICriticalNotifyCompletion : INotifyCompletion
+	{
+		/// <summary>Schedules the continuation action that's invoked when the instance completes.</summary>
+		/// <param name="continuation">The action to invoke when the operation completes.</param>
+		/// <exception cref="T:System.ArgumentNullException">The <paramref name="continuation" /> argument is null (Nothing in Visual Basic).</exception>
+		// Token: 0x06002A31 RID: 10801
+		[Token(Token = "0x6002A31")]
+		[Address(Slot = "0")]
+		void UnsafeOnCompleted(Action continuation);
+	}
+}