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.util.Log.popDiagnosticHandler(Log.java:461)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.showDiagnostics(JavacProcessingEnvironment.java:1050)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1105)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1235)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1122)
   at com.sun.tools.javac.main.JavaCompiler.complete(JavaCompiler.java:830)
   at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2521)
   at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2416)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:429)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:881)
   at com.sun.tools.javac.jvm.ClassReader.loadClass(ClassReader.java:2610)
   at com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1698)
   at com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:1881)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:403)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:392)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1876)
   at com.sun.tools.javac.comp.Attr.attribIdent(Attr.java:388)
   at com.sun.tools.javac.main.JavaCompiler.resolveIdent(JavaCompiler.java:729)
   at com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:365)
   at com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:355)
   at org.netbeans.api.java.source.ElementHandle.getTypeElementByBinaryName(ElementHandle.java:613)
   at org.netbeans.api.java.source.ElementHandle.resolveImpl(ElementHandle.java:166)
   at org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:136)
   at org.netbeans.api.java.source.TreePathHandle$TreeDelegate.resolve(TreePathHandle.java:453)
   at org.netbeans.api.java.source.TreePathHandle.resolve(TreePathHandle.java:154)
   at org.netbeans.modules.java.hints.FieldForUnusedParam$FixImpl$1.run(FieldForUnusedParam.java:244)
   at org.netbeans.modules.java.hints.FieldForUnusedParam$FixImpl$1.run(FieldForUnusedParam.java:240)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:644)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:634)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:488)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:586)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:198)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:198)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:438)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:409)
   at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:655)
   at org.netbeans.modules.java.hints.FieldForUnusedParam$FixImpl.implement(FieldForUnusedParam.java:240)
   at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:788)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2044)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.editor.hints.HintsUI.invokeHint(HintsUI.java:785)
   at org.netbeans.modules.editor.hints.HintsUI.keyPressed(HintsUI.java:733)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:250)
   at java.awt.Component.processKeyEvent(Component.java:6471)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2830)
   at java.awt.Component.processEvent(Component.java:6290)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4869)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4691)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1953)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:796)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1056)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:931)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:761)
   at java.awt.Component.dispatchEventImpl(Component.java:4740)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2721)
   at java.awt.Component.dispatchEvent(Component.java:4691)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:722)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:681)
   at java.awt.EventQueue$3.run(EventQueue.java:679)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:695)
   at java.awt.EventQueue$4.run(EventQueue.java:693)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:692)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)