I found that some associations in UML2.0 superstructure were not
implemented in the uml2_1.1.1. For example, Activity.variable (pp. 297)
and BehavioralFeature.ownedParameter (pp.29), etc. The javadoc of each
class of the metamodel has a "supported features" section, but I am
wondering if there exists a complete list of all those
unsupported/supported associations. Thank you.