java.lang.AssertionError
   at com.oracle.js.parser.Parser.classTail(Parser.java:1339)
   at com.oracle.js.parser.Parser.classExpression(Parser.java:1213)
   at com.oracle.js.parser.Parser.classDeclaration(Parser.java:1187)
   at com.oracle.js.parser.Parser.statement(Parser.java:1134)
   at com.oracle.js.parser.Parser.sourceElements(Parser.java:932)
   at com.oracle.js.parser.Parser.program(Parser.java:867)
   at com.oracle.js.parser.Parser.parse(Parser.java:334)
   at com.oracle.js.parser.Parser.parse(Parser.java:288)
   at org.netbeans.modules.javascript2.editor.parser.JsParser.parseSource(JsParser.java:125)
   at org.netbeans.modules.javascript2.editor.parser.JsParser.parseSource(JsParser.java:52)
   at org.netbeans.modules.javascript2.editor.parser.SanitizingParser.parseContext(SanitizingParser.java:240)
   at org.netbeans.modules.javascript2.editor.parser.SanitizingParser.parseContext(SanitizingParser.java:220)
   at org.netbeans.modules.javascript2.editor.parser.SanitizingParser.parseSource(SanitizingParser.java:137)
   at org.netbeans.modules.javascript2.editor.parser.SanitizingParser.parse(SanitizingParser.java:97)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParse(TaskProcessor.java:621)
   at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:251)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:798)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)