oh dear

mscorlib/System/STAThreadAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Runtime.InteropServices;
+using Cpp2IlInjected;
+
+namespace System
+{
+	/// <summary>Indicates that the COM threading model for an application is single-threaded apartment (STA).</summary>
+	// Token: 0x0200013F RID: 319
+	[Token(Token = "0x200013F")]
+	[ComVisible(true)]
+	[AttributeUsage(AttributeTargets.Method)]
+	public sealed class STAThreadAttribute : Attribute
+	{
+		/// <summary>Initializes a new instance of the <see cref="T:System.STAThreadAttribute" /> class.</summary>
+		// Token: 0x06000C94 RID: 3220 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6000C94")]
+		[Address(RVA = "0x4093D0", Offset = "0x4081D0", VA = "0x1804093D0")]
+		public STAThreadAttribute()
+		{
+		}
+	}
+}