public void MultipleEngines_ClosedInOpenOrder_NotCrash()
		{
			var engine1 = new XklEngine();
			var engine2 = new XklEngine();
			engine1.Close();
			engine2.Close();
		}
		public void UseAfterClose_NotCrash()
		{
			var engine = new XklEngine();
			engine.Close();
			engine.SetGroup(0);
		}
		public void Basic()
		{
			var engine = new XklEngine();
			engine.Close();
		}