public NotImplementedByDesignException( 
   string message,
   int line,
   string callerMemberName,
   string filePath
)

public class CommandProcessor
            {
            public enum CommandType
            {
            Start,
            Stop,
            Pause,
            Unsupported // This command is intentionally not supported
            }
            public void ProcessCommand(CommandType command, [CallerMemberName] string? callerMemberName = null, [CallerFilePath] string? filePath = null, [CallerLineNumber] int line = 0)
            {
            _ = command switch
            {
            CommandType.Start => HandleStartCommand(),
            CommandType.Stop => HandleStopCommand(),
            CommandType.Pause => HandlePauseCommand(),
            CommandType.Unsupported => throw new NotImplementedByDesignException($"The command '{nameof(CommandType.Unsupported)}' is not supported by design.", callerMemberName, filePath, line),
            _ => throw new ArgumentException($"Invalid command: {command}", nameof(command))
            };
            }
            private string HandleStartCommand() => "Started";
            private string HandleStopCommand() => "Stopped";
            private string HandlePauseCommand() => "Paused";
            }