java.lang.IllegalArgumentException: PARAMETER at org.netbeans.api.java.source.ElementHandle.createImpl(ElementHandle.java:527) at org.netbeans.api.java.source.ElementHandle.create(ElementHandle.java:420) at org.netbeans.modules.java.hints.introduce.FieldValidator$SearchImpl.run(FieldValidator.java:166) at org.netbeans.modules.java.hints.introduce.FieldValidator$SearchImpl.run(FieldValidator.java:105) at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:523) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$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$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:90) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:473) at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:444) at org.netbeans.modules.java.hints.introduce.FieldValidator.validateName(FieldValidator.java:97) at org.netbeans.modules.java.hints.introduce.NameChangeSupport.run(NameChangeSupport.java:164) at org.openide.util.RequestProcessor$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$Processor.run(RequestProcessor.java:2058) Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalArgumentException: PARAMETER at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1484) at org.netbeans.modules.java.hints.introduce.NameChangeSupport.insertUpdate(NameChangeSupport.java:120) at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:201) at javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:748) at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:707) at javax.swing.text.PlainDocument.insertString(PlainDocument.java:130) at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:669) at javax.swing.text.JTextComponent.replaceSelection(JTextComponent.java:1328) at javax.swing.text.DefaultEditorKit$DefaultKeyTypedAction.actionPerformed(DefaultEditorKit.java:884) at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1663) at javax.swing.JComponent.processKeyBinding(JComponent.java:2882) at javax.swing.JComponent.processKeyBindings(JComponent.java:2929) at javax.swing.JComponent.processKeyEvent(JComponent.java:2845) at java.awt.Component.processEvent(Component.java:6310) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771) at java.awt.Component.dispatchEventImpl(Component.java:4760) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109) at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184) at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229) at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227) at java.awt.Dialog.show(Dialog.java:1084) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1085) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1135) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1107) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:130) at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEventAccess(NbMutexEventProvider.java:138) at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:98) at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:94) at org.openide.util.Mutex.readAccess(Mutex.java:218) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1092) at java.awt.Component.show(Component.java:1671) at java.awt.Component.setVisible(Component.java:1623) at java.awt.Window.setVisible(Window.java:1014) at java.awt.Dialog.setVisible(Dialog.java:1005) at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.showDialog(DialogDisplayerImpl.java:266) at org.netbeans.core.windows.services.DialogDisplayerImpl.notify(DialogDisplayerImpl.java:282) at org.netbeans.core.windows.services.DialogDisplayerImpl.notify(DialogDisplayerImpl.java:173) at org.netbeans.modules.java.hints.introduce.IntroduceVariableFix.implement(IntroduceVariableFix.java:163) at org.netbeans.modules.java.hints.introduce.MethodCandidateChooser.openSelected(MethodCandidateChooser.java:197) at org.netbeans.modules.java.hints.introduce.MethodCandidateChooser.jList1MouseClicked(MethodCandidateChooser.java:172) at org.netbeans.modules.java.hints.introduce.MethodCandidateChooser.access$200(MethodCandidateChooser.java:72) at org.netbeans.modules.java.hints.introduce.MethodCandidateChooser$3.mouseClicked(MethodCandidateChooser.java:150) at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270) at java.awt.Component.processMouseEvent(Component.java:6536) at javax.swing.JComponent.processMouseEvent(JComponent.java:3324) at java.awt.Component.processEvent(Component.java:6298) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4888) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4534) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4466) at java.awt.Container.dispatchEventImpl(Container.java:2280) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)