oh dear

mscorlib/System/PlatformNotSupportedException.cs

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+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.Serialization;
+using Cpp2IlInjected;
+
+namespace System
+{
+	/// <summary>The exception that is thrown when a feature does not run on a particular platform.</summary>
+	// Token: 0x0200012B RID: 299
+	[Token(Token = "0x200012B")]
+	[ComVisible(true)]
+	[Serializable]
+	public class PlatformNotSupportedException : NotSupportedException
+	{
+		/// <summary>Initializes a new instance of the <see cref="T:System.PlatformNotSupportedException" /> class with default properties.</summary>
+		// Token: 0x06000AC9 RID: 2761 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6000AC9")]
+		[Address(RVA = "0x2A16B50", Offset = "0x2A15950", VA = "0x182A16B50")]
+		public PlatformNotSupportedException()
+		{
+		}
+
+		/// <summary>Initializes a new instance of the <see cref="T:System.PlatformNotSupportedException" /> class with a specified error message.</summary>
+		/// <param name="message">The text message that explains the reason for the exception.</param>
+		// Token: 0x06000ACA RID: 2762 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6000ACA")]
+		[Address(RVA = "0x2A16B20", Offset = "0x2A15920", VA = "0x182A16B20")]
+		public PlatformNotSupportedException(string message)
+		{
+		}
+
+		/// <summary>Initializes a new instance of the <see cref="T:System.PlatformNotSupportedException" /> class with serialized data.</summary>
+		/// <param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo" /> that holds the serialized object data about the exception being thrown.</param>
+		/// <param name="context">The <see cref="T:System.Runtime.Serialization.StreamingContext" /> that contains contextual information about the source or destination.</param>
+		// Token: 0x06000ACB RID: 2763 RVA: 0x00002050 File Offset: 0x00000250
+		[Token(Token = "0x6000ACB")]
+		[Address(RVA = "0x4E7140", Offset = "0x4E5F40", VA = "0x1804E7140")]
+		protected PlatformNotSupportedException(SerializationInfo info, StreamingContext context)
+		{
+		}
+	}
+}