InvalidPlatformException
InvalidPlatformException is thrown when the platform name supplied
            to a test is not recognized.
            
                using System;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
namespace NUnit.Framework.Internal
{
    [Serializable]
    [System.Runtime.CompilerServices.NullableContext(1)]
    [System.Runtime.CompilerServices.Nullable(0)]
    internal class InvalidPlatformException : ArgumentException
    {
        public InvalidPlatformException()
        {
        }
        public InvalidPlatformException(string message)
            : base(message)
        {
        }
        public InvalidPlatformException(string message, Exception inner)
            : base(message, inner)
        {
        }
        protected InvalidPlatformException(SerializationInfo info, StreamingContext context)
            : base(info, context)
        {
        }
    }
}