java.lang.IllegalStateException: Different documents used by fold hierarchy and fold task.
Fold hierarchy document: org.netbeans.modules.editor.NbEditorDocument@6b2da268, mimeType='text/x-java', kitClass=null, length=4, version=1, file=org.netbeans.modules.java.JavaDataObject@587d9879[/Users/tester/Downloads/default/src/org/netbeans/tests/examples/packb/BeanA.java@8299e2a7:113d7493]
Fold task document: org.netbeans.modules.editor.NbEditorDocument@6445e177, mimeType='text/x-java', kitClass=null, length=2271, version=46, file=org.netbeans.modules.java.JavaDataObject@587d9879[/Users/tester/Downloads/default/src/org/netbeans/tests/examples/packb/BeanA.java@8299e2a7:113d7493]
   at org.netbeans.modules.java.editor.fold.JavaElementFoldManager.initFolds(JavaElementFoldManager.java:153)
   at org.netbeans.modules.editor.fold.FoldOperationImpl.initFolds(FoldOperationImpl.java:115)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.rebuildManagers(FoldHierarchyExecution.java:727)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.rebuild(FoldHierarchyExecution.java:660)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution$1.run(FoldHierarchyExecution.java:608)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1454)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2043)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: Different documents used by fold hierarchy and fold task.
Fold hierarchy document: org.netbeans.modules.editor.NbEditorDocument@6b2da268, mimeType='text/x-java', kitClass=null, length=4, version=1, file=org.netbeans.modules.java.JavaDataObject@587d9879[/Users/tester/Downloads/default/src/org/netbeans/tests/examples/packb/BeanA.java@8299e2a7:113d7493]
Fold task document: org.netbeans.modules.editor.NbEditorDocument@6445e177, mimeType='text/x-java', kitClass=null, length=2271, version=46, file=org.netbeans.modules.java.JavaDataObject@587d9879[/Users/tester/Downloads/default/src/org/netbeans/tests/examples/packb/BeanA.java@8299e2a7:113d7493]
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.postWatchDocumentChanges(FoldHierarchyExecution.java:606)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution.access$500(FoldHierarchyExecution.java:106)
   at org.netbeans.modules.editor.fold.FoldHierarchyExecution$3$1$1.run(FoldHierarchyExecution.java:785)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:691)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
   at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
   at java.awt.Dialog.show(Dialog.java:1077)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1074)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1114)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1096)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:126)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
   at org.openide.util.Mutex.readAccess(Mutex.java:273)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1081)
   at java.awt.Component.show(Component.java:1651)
   at java.awt.Component.setVisible(Component.java:1603)
   at java.awt.Window.setVisible(Window.java:1014)
   at java.awt.Dialog.setVisible(Dialog.java:1003)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog(ParametersPanel.java:666)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh(RefactoringPanel.java:680)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.access$3000(RefactoringPanel.java:104)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel$ButtonL.actionPerformed(RefactoringPanel.java:1184)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
   at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
   at java.awt.Component.processMouseEvent(Component.java:6505)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
   at java.awt.Component.processEvent(Component.java:6270)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:696)
   at java.awt.EventQueue$4.run(EventQueue.java:694)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)