java.lang.AssertionError
   at com.sun.tools.javac.util.Assert.error(Assert.java:126)
   at com.sun.tools.javac.util.Assert.check(Assert.java:45)
   at com.sun.tools.javac.jvm.Code$State.forceStackTop(Code.java:1723)
   at com.sun.tools.javac.jvm.Gen.visitConditional(Gen.java:1715)
   at com.sun.tools.javac.tree.JCTree$JCConditional.accept(JCTree.java:1113)
   at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:840)
   at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:859)
   at com.sun.tools.javac.jvm.Gen.visitApply(Gen.java:1693)
   at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1326)
   at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:840)
   at com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1641)
   at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1172)
   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$JCBlock.accept(JCTree.java:786)
   at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:687)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:722)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:708)
   at com.sun.tools.javac.jvm.Gen.visitIf(Gen.java:1618)
   at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1145)
   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$JCBlock.accept(JCTree.java:786)
   at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:687)
   at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:722)
   at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:915)
   at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:888)
   at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:674)
   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:727)
   at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1502)
   at com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:521)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:609)
   at com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:524)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:278)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer$1.run(JavaCustomIndexer.java:198)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer$1.run(JavaCustomIndexer.java:160)
   at org.netbeans.modules.java.source.usages.ClassIndexManager.prepareWriteLock(ClassIndexManager.java:120)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:160)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:153)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:283)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:151)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:1879)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$1400(RepositoryUpdater.java:1609)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:1789)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$2.run(RepositoryUpdater.java:1787)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:460)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:1787)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:3736)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:3512)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:3257)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:2268)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:4170)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:4110)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:624)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:734)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:722)