java.lang.AssertionError
   at org.openide.awt.HtmlRendererImpl.reset(HtmlRendererImpl.java:103)
   at org.openide.awt.HtmlRendererImpl.getListCellRendererComponent(HtmlRendererImpl.java:165)
   at org.netbeans.modules.java.hints.introduce.CommonMembersPanel$TargetsRendererImpl.getListCellRendererComponent(CommonMembersPanel.java:118)
   at javax.swing.plaf.basic.BasicListUI.updateLayoutState(BasicListUI.java:1361)
   at javax.swing.plaf.basic.BasicListUI.maybeUpdateLayoutState(BasicListUI.java:1311)
   at javax.swing.plaf.basic.BasicListUI$Handler.valueChanged(BasicListUI.java:2623)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:164)
   at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:211)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:405)
   at javax.swing.DefaultListSelectionModel.changeSelection(DefaultListSelectionModel.java:415)
   at javax.swing.DefaultListSelectionModel.setSelectionInterval(DefaultListSelectionModel.java:459)
   at javax.swing.JList.setSelectedIndex(JList.java:2210)
   at javax.swing.plaf.basic.BasicComboPopup.setListSelection(BasicComboPopup.java:1168)
   at javax.swing.plaf.basic.BasicComboPopup.access$300(BasicComboPopup.java:63)
   at javax.swing.plaf.basic.BasicComboPopup$Handler.itemStateChanged(BasicComboPopup.java:999)
   at javax.swing.JComboBox.fireItemStateChanged(JComboBox.java:1223)
   at javax.swing.JComboBox.selectedItemChanged(JComboBox.java:1280)
   at javax.swing.JComboBox.contentsChanged(JComboBox.java:1330)
   at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:118)
   at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:93)
   at javax.swing.JComboBox.setSelectedItem(JComboBox.java:576)
   at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:622)
   at org.netbeans.modules.java.hints.introduce.CommonMembersPanel.updateTargetsModel(CommonMembersPanel.java:98)
   at org.netbeans.modules.java.hints.introduce.CommonMembersPanel.initialize(CommonMembersPanel.java:81)
   at org.netbeans.modules.java.hints.introduce.IntroduceMethodPanel.<init>(IntroduceMethodPanel.java:127)
   at org.netbeans.modules.java.hints.introduce.IntroduceExpressionBasedMethodFix.implement(IntroduceExpressionBasedMethodFix.java:201)
   at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:847)
   at org.openide.util.RequestProcessor$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.AssertionError
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:420)
   at org.netbeans.modules.editor.hints.HintsUI.invokeHint(HintsUI.java:844)
   at org.netbeans.modules.editor.hints.HintsUI.keyPressed(HintsUI.java:770)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:250)
   at java.awt.Component.processKeyEvent(Component.java:6491)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2832)
   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:76)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
   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:76)
   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)