ST6RI-406 Fixed performed/exhibited/included elements for dot notation.

Author: seidewitz

org.omg.sysml/src/org/omg/sysml/util/FeatureUtil.java

@@ -125,6 +125,7 @@ public static <T extends Feature> T getReferencedFeatureOf(T feature, Class<T> k
 		return feature.getOwnedSubsetting().stream().
 				filter(sub->!(sub instanceof Redefinition)).
 				map(Subsetting::getSubsettedFeature).
+				map(FeatureUtil::getBasicFeatureOf).
 				filter(kind::isInstance).
 				map(kind::cast).
 				findFirst().orElse(feature);