java.lang.NullPointerException
   at com.sun.tools.javac.comp.TransTypes.translateClass(TransTypes.java:850)
   at com.sun.tools.javac.comp.TransTypes.visitClassDef(TransTypes.java:446)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:593)
   at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
   at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
   at com.sun.tools.javac.tree.TreeTranslator.visitClassDef(TreeTranslator.java:134)
   at com.sun.tools.javac.comp.TransTypes.translateClass(TransTypes.java:871)
   at com.sun.tools.javac.comp.TransTypes.visitClassDef(TransTypes.java:446)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:593)
   at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
   at com.sun.tools.javac.comp.TransTypes.translate(TransTypes.java:425)
   at com.sun.tools.javac.comp.TransTypes.translateTopLevelClass(TransTypes.java:898)
   at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1412)
   at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1302)
   at com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:534)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:622)
   at com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:537)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:340)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.dumpSymFile(MultiPassCompileWorker.java:465)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.dumpSymFiles(MultiPassCompileWorker.java:453)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:240)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:235)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:158)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:267)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:156)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:2498)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$1500(RepositoryUpdater.java:2096)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:2405)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:2403)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:544)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:2403)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:4886)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:4605)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:4310)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3022)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:5313)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4800(RepositoryUpdater.java:4993)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:5238)
   at org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:96)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:5234)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:5230)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:5230)
   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 org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2036)