namespace Tag_4_Unterricht;

public class Sealed
{
	public static void Main()
	{
		var data = new MyData(1);
		data.subData = 10;
	}

	class MyData
	{
		public const string Greeting = "Hello";
		public readonly int subData;

		public MyData(int subData)
		{
			this.subData = subData;
		}

		public void NotAllowed()
		{
			subData = 10;
		}
	}
}