9 return <bold>s</bold> (in test(Int))
4 	<bold>var s</bold> = when { (in test(Int))
4 		var s = <bold>when {</bold> (in test(Int))
5 			n > 0 -> <bold>"+"</bold> (in test(Int))
6 			n < 0 -> <bold>"-"</bold> (in test(Int))
7 			else -> <bold>null</bold> (in test(Int))
