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#     http://www.apache.org/licenses/LICENSE-2.0
#
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import kernel

interface A
	type V1: Object
	fun v1(v: V1): V1 do return v
	type V2: Object
	fun v2(v: V2): V2 do return v
end
interface B
	super A
	redef type V1: Discrete
	redef type V2: Discrete is fixed
end
class C
	super B

	# Because of the workaround, there is no simple way to see the subtype relation
	#alt1#redef fun v1(v: Discrete): Discrete do return v
	redef fun v2(v: Discrete): Discrete do return v
end

var c: A = new C
c.v1(1).output
c.v1(2).output