java.lang.AssertionError
   at com.sun.tools.javac.util.Assert.error(Assert.java:155)
   at com.sun.tools.javac.util.Assert.check(Assert.java:46)
   at com.sun.tools.javac.comp.Annotate$1.run(Annotate.java:234)
   at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:173)
   at com.sun.tools.javac.comp.Annotate.unblockAnnotations(Annotate.java:130)
   at com.sun.tools.javac.comp.Enter.complete(Enter.java:731)
   at org.netbeans.lib.nbjavac.services.NBJavadocEnter.main(NBJavadocEnter.java:84)
   at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:995)
   at com.sun.tools.javac.api.JavacTaskImpl.enter(JavacTaskImpl.java:369)
   at org.netbeans.modules.java.source.TreeLoader.loadTreeFor(TreeLoader.java:199)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:594)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:620)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:368)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:363)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:358)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:348)
   at com.sun.tools.javac.api.JavacTrees.getTree(JavacTrees.java:156)
   at org.netbeans.api.java.source.TreeUtilities.parseType(TreeUtilities.java:529)
   at org.netbeans.modules.java.hints.spiimpl.Hacks.parseFQNType(Hacks.java:185)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:537)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:295)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:240)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:210)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:183)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:150)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:137)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:88)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$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)