java.lang.IllegalArgumentException: getParent() called for DE (30042522)["porttypes" (tag) <2688-2729> '])" xlink:...'] which is not in the elements list!
        at org.netbeans.modules.editor.structure.api.DocumentModel.getParent(DocumentModel.java:647)
        at org.netbeans.modules.editor.structure.api.DocumentModel$DocumentModelModificationTransaction.removeDE(DocumentModel.java:1056)
        at org.netbeans.modules.editor.structure.api.DocumentModel$DocumentModelModificationTransaction.commit(DocumentModel.java:932)
        at org.netbeans.modules.editor.structure.api.DocumentModel$DocumentModelModificationTransaction.access$200(DocumentModel.java:817)
        at org.netbeans.modules.editor.structure.api.DocumentModel$2.run(DocumentModel.java:497)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)