java.lang.AssertionError
   at com.sun.tools.javac.jvm.Items$Item.load(Items.java:199)
   at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:243)
   at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:262)
   at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:842)
   at com.sun.tools.javac.jvm.Gen.visitReturn(Gen.java:1662)
   at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1243)
   at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:687)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:722)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:708)
   at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:759)
   at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1034)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:784)
   at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:687)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:722)
   at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:915)
   at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:888)
   at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:672)
   at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:687)
   at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2235)
   at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:720)
   at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1483)
   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.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:297)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:236)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:160)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:268)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:158)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:2453)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$1200(RepositoryUpdater.java:2039)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2345)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2343)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:544)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:2343)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:4965)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:4677)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:4382)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3032)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:5404)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4600(RepositoryUpdater.java:5073)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3$1.run(RepositoryUpdater.java:5329)
   at org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:96)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3.call(RepositoryUpdater.java:5325)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$3.call(RepositoryUpdater.java:5321)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:5321)
   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:2043)