Hi, is this correct in the WoT impl ? The `WoT.produce` function returns an interface `WoT.ExposedThing? https://github.com/eclipse-thingweb/node-wot/blob/master/packages/core/src/wot-impl.ts#L125 But `WoT.consume` function returns an implementation class `ConsumedThing` instead of the interface `WoT.ConsumedThing` Is this correct or a bug? https://github.com/eclipse-thingweb/node-wot/blob/master/packages/core/src/wot-impl.ts#L104)