java.lang.AssertionError
        at org.netbeans.modules.csl.core.GsfHtmlFormatter.parameters(GsfHtmlFormatter.java:123)
        at org.netbeans.modules.javascript.editing.JsAnalyzer$JsStructureItem.getHtml(JsAnalyzer.java:982)
        at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:287)
        at org.netbeans.modules.csl.navigation.ElementNode.updateRecursively(ElementNode.java:279)
        at org.netbeans.modules.csl.navigation.ClassMemberPanelUI$3.run(ClassMemberPanelUI.java:210)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)