oh dear

mscorlib/System/Runtime/InteropServices/MarshalDirectiveException.cs

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+using System;
+using System.Runtime.Serialization;
+using Cpp2IlInjected;
+
+namespace System.Runtime.InteropServices
+{
+	/// <summary>The exception that is thrown by the marshaler when it encounters a <see cref="T:System.Runtime.InteropServices.MarshalAsAttribute" /> it does not support.</summary>
+	// Token: 0x02000583 RID: 1411
+	[Token(Token = "0x2000583")]
+	[ComVisible(true)]
+	[Serializable]
+	public class MarshalDirectiveException : SystemException
+	{
+		/// <summary>Initializes a new instance of the <see langword="MarshalDirectiveException" /> class with default properties.</summary>
+		// Token: 0x06002AC0 RID: 10944 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6002AC0")]
+		[Address(RVA = "0x237DCF0", Offset = "0x237CAF0", VA = "0x18237DCF0")]
+		public MarshalDirectiveException()
+		{
+		}
+
+		/// <summary>Initializes a new instance of the <see langword="MarshalDirectiveException" /> class with a specified error message.</summary>
+		/// <param name="message">The error message that specifies the reason for the exception.</param>
+		// Token: 0x06002AC1 RID: 10945 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6002AC1")]
+		[Address(RVA = "0x237DD50", Offset = "0x237CB50", VA = "0x18237DD50")]
+		public MarshalDirectiveException(string message)
+		{
+		}
+
+		/// <summary>Initializes a new instance of the <see langword="MarshalDirectiveException" /> class from serialization data.</summary>
+		/// <param name="info">The object that holds the serialized object data.</param>
+		/// <param name="context">The contextual information about the source or destination.</param>
+		/// <exception cref="T:System.ArgumentNullException">
+		///   <paramref name="info" /> is <see langword="null" />.</exception>
+		// Token: 0x06002AC2 RID: 10946 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6002AC2")]
+		[Address(RVA = "0x3F60E0", Offset = "0x3F4EE0", VA = "0x1803F60E0")]
+		protected MarshalDirectiveException(SerializationInfo info, StreamingContext context)
+		{
+		}
+	}
+}