java.lang.ClassCastException: com.sun.tools.javac.code.Type$TypeVar cannot be cast to com.sun.tools.javac.code.Type$ClassType
   at com.sun.tools.javac.comp.MemberEnter$Synthesizer.visitTypeApply(MemberEnter.java:1591)
   at com.sun.tools.javac.tree.JCTree$JCTypeApply.accept(JCTree.java:2117)
   at com.sun.tools.javac.comp.MemberEnter$Synthesizer.visit(MemberEnter.java:1543)
   at com.sun.tools.javac.comp.MemberEnter$7.getModelType(MemberEnter.java:1525)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.getSuperclass(Symbol.java:935)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.getSuperclass(Symbol.java:769)
   at org.netbeans.modules.java.hints.ExportNonAccessibleElement.visitType(ExportNonAccessibleElement.java:222)
   at org.netbeans.modules.java.hints.ExportNonAccessibleElement.visitType(ExportNonAccessibleElement.java:92)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.accept(Symbol.java:979)
   at org.netbeans.modules.java.hints.ExportNonAccessibleElement.run(ExportNonAccessibleElement.java:113)
   at org.netbeans.modules.java.hints.legacy.spi.RulesManager$WorkerImpl.createErrors(RulesManager.java:403)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:786)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$400(HintsInvoker.java:111)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:653)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:672)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:610)
   at com.sun.source.util.TreeScanner.scan(TreeScanner.java:91)
   at org.netbeans.api.java.source.support.CancellableTreePathScanner.scan(CancellableTreePathScanner.java:103)
   at com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:99)
   at com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:120)
   at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:551)
   at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:50)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:697)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:254)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:237)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:207)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:180)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:149)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:83)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:563)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:739)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at java.lang.Thread.run(Thread.java:722)