class Thing
	
	var _name as String
	
	cue init(name as String)
		base.init
		_name = name
	
	def toString as String is override
		return _name
	
		
class Test

	def main is shared
		a as Thing? = Thing('a')
		b = Thing('b')
		if a
			a = b
		assert a is b

		x as Object = Thing('x')
		if x inherits Thing
			x = b
		assert x is b