ST6RI-901 Adjusted handling of subobject specialization in ItemAdapter.

Author: seidewitz

org.omg.sysml/src/org/omg/sysml/adapter/ItemUsageAdapter.java

@@ -55,6 +55,11 @@ protected boolean isSuboccurrence() {
 		return super.isSuboccurrence() && !isSubitem();
 	}
 
+	@Override
+	protected boolean isSubobject() {
+		return super.isSubobject() && !isSubitem();
+	}
+	
 	public boolean isSubitem() {
 		ItemUsage target = getTarget();
 		Type owningType = target.getOwningType();