[Nml-wg] hasService / hasInboundPort

Hi, For most of the NML model we have made it so that there is only one relation defined between two objects. However, Richard spotted a situation where we do have two: - A Port can have a "hasService" relation to a SwitchingService - A SwitchingService can have a "hasInboundPort" relation to a Port Perhaps it would make sense to suggest a preference that one of them must be there and that the other is optional. The second relation is slightly more informative, so that is probably better. Jeroen.