com.sun.tools.javac.util.FatalError: Fatal Error: Unable to find method values
   at com.sun.tools.javac.comp.Resolve.resolveInternalMethod(Resolve.java:2504)
   at com.sun.tools.javac.comp.Lower.lookupMethod(Lower.java:762)
   at com.sun.tools.javac.comp.Lower.visitEnumDef(Lower.java:2583)
   at com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2465)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:698)
   at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
   at com.sun.tools.javac.comp.Lower.translate(Lower.java:2361)
   at com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2498)
   at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:698)
   at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
   at com.sun.tools.javac.comp.Lower.translate(Lower.java:2361)
   at com.sun.tools.javac.comp.Lower.translate(Lower.java:2380)
   at com.sun.tools.javac.comp.Lower.translateTopLevelClass(Lower.java:3937)
   at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1589)
   at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1421)
   at com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:535)
   at com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:623)
   at com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:538)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:412)
   at org.netbeans.modules.java.source.TreeLoader.dumpSymFile(TreeLoader.java:371)
   at org.netbeans.modules.java.source.TreeLoader.loadTreeFor(TreeLoader.java:202)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName(Symbol.java:1362)
   at com.sun.tools.javac.code.Symbol$ParamSymbol.getSimpleName(Symbol.java:1329)
   at org.netbeans.modules.editor.java.JavaCompletionItem$StaticMemberItem.<init>(JavaCompletionItem.java:3023)
   at org.netbeans.modules.editor.java.JavaCompletionItem$StaticMemberItem.<init>(JavaCompletionItem.java:2979)
   at org.netbeans.modules.editor.java.JavaCompletionItem.createStaticMemberItem(JavaCompletionItem.java:252)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem$StaticMemberItem.getDelegate(LazyJavaCompletionItem.java:314)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem$StaticMemberItem.getDelegate(LazyJavaCompletionItem.java:278)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem$1.run(LazyJavaCompletionItem.java:133)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   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:88)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem.accept(LazyJavaCompletionItem.java:126)
   at org.netbeans.modules.editor.completion.CompletionImpl$2.accept(CompletionImpl.java:166)
   at org.netbeans.modules.editor.completion.CompletionImpl.requestShowCompletionPane(CompletionImpl.java:985)
   at org.netbeans.modules.editor.completion.CompletionImpl.finishNotify(CompletionImpl.java:1510)
   at org.netbeans.modules.editor.completion.CompletionResultSetImpl.finish(CompletionResultSetImpl.java:274)
   at org.netbeans.spi.editor.completion.CompletionResultSet.finish(CompletionResultSet.java:245)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:306)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1425)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:59)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:294)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2038)