oh dear

mscorlib/System/Security/UnverifiableCodeAttribute.cs

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+using System;
+using System.Runtime.InteropServices;
+using Cpp2IlInjected;
+
+namespace System.Security
+{
+	/// <summary>Marks modules containing unverifiable code. This class cannot be inherited.</summary>
+	// Token: 0x0200039E RID: 926
+	[Token(Token = "0x200039E")]
+	[ComVisible(true)]
+	[AttributeUsage(AttributeTargets.Module)]
+	public sealed class UnverifiableCodeAttribute : Attribute
+	{
+		/// <summary>Initializes a new instance of the <see cref="T:System.Security.UnverifiableCodeAttribute" /> class.</summary>
+		// Token: 0x06002038 RID: 8248 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6002038")]
+		[Address(RVA = "0x4093D0", Offset = "0x4081D0", VA = "0x1804093D0")]
+		public UnverifiableCodeAttribute()
+		{
+		}
+	}
+}