java.lang.NullPointerException
   at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.unrecoverableError(JavacProcessingEnvironment.java:1151)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1321)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1348)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1236)
   at com.sun.tools.javac.main.JavaCompiler.lambda$readSourceFile$139(JavaCompiler.java:934)
   at com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:315)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:636)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1325)
   at com.sun.tools.javac.code.Type$ClassType.complete(Type.java:1156)
   at com.sun.tools.javac.code.Type$ClassType.getTypeArguments(Type.java:1077)
   at com.sun.tools.javac.code.Type$ClassType.isErroneous(Type.java:1112)
   at com.sun.tools.javac.comp.Resolve.findGlobalType(Resolve.java:2224)
   at com.sun.tools.javac.comp.Resolve.findType(Resolve.java:2299)
   at com.sun.tools.javac.comp.Resolve.findIdent(Resolve.java:2328)
   at com.sun.tools.javac.comp.Resolve.resolveIdent(Resolve.java:2557)
   at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:3542)
   at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:2229)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:502)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3629)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2110)
   at com.sun.tools.javac.comp.ArgumentAttr.visitTree(ArgumentAttr.java:203)
   at com.sun.tools.javac.tree.JCTree$Visitor.visitSelect(JCTree.java:3082)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2110)
   at com.sun.tools.javac.comp.ArgumentAttr.attribArg(ArgumentAttr.java:193)
   at com.sun.tools.javac.comp.Attr$MethodAttrInfo.attr(Attr.java:550)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.attribArgs(Attr.java:746)
   at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1850)
   at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1634)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:502)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:689)
   at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1700)
   at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1452)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:502)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:713)
   at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:737)
   at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1221)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1020)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:502)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:713)
   at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1107)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitMethodDef(NBAttr.java:76)
   at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:872)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:502)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:643)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:713)
   at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4785)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4669)
   at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4597)
   at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4542)
   at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1434)
   at com.sun.tools.javac.api.JavacTaskImpl$1.process(JavacTaskImpl.java:478)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:619)
   at com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:481)
   at org.netbeans.modules.java.source.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:276)
   at org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:280)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:161)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:298)
   at org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:159)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:2773)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$800(RepositoryUpdater.java:2177)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2659)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2657)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:565)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:2657)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$4.call(RepositoryUpdater.java:5726)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork$4.call(RepositoryUpdater.java:5634)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$4.run(RepositoryUpdater.java:2150)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2146)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2127)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.access$1500(RepositoryUpdater.java:159)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSource(RepositoryUpdater.java:5761)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$AbstractRootsWork.scanSources(RepositoryUpdater.java:5431)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$RootsWork.getDone(RepositoryUpdater.java:5050)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3432)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:6195)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4300(RepositoryUpdater.java:5846)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:6111)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:106)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6107)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6103)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:90)
   at org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:6103)
   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)