interface IFoo

	def foo
		

class Test
	implements IFoo
	
	def foo
		pass
		
	def process(foo as IFoo)
		foo.foo
		# use System.Object methods:
		assert foo.equals(foo)
		assert foo.getHashCode <> 0
		assert foo.toString.length
		assert foo.getType is .getType

	def main is shared
		Test().process(Test())