VF — Missing Constraint on InputDelegation and OutputDelegation.

It is currently allowed that a Port of an Activity that is contained in a Collaboration, can be connected to multiple Ports of the containing Collaboration. That should not be allowed.

Add constraint to InputDelegation and OutputDelegation Classes

Add the following constraint to 7.2.4.4.2 (InputDelegation Class): "An InputPort of an Activity that is contained in a Collaboration MUST NOT be mapped, via InputDelegation, to more than one InputPort of the containing Collaboration", and add the following constraint to 7.2.4.4.3 (OutputDelegation Class): "An OutputPort of an Activity that is contained in a Collaboration MUST NOT be mapped, via OutputDelegation, to more than one OutputPort of the containing Collaboration".