java.lang.AssertionError
   at org.netbeans.modules.languages.yaml.InsertTabAction$TabReplacer.replaceTab(InsertTabAction.java:122)
   at org.netbeans.modules.languages.yaml.InsertTabAction$TabReplacer.tryReplaceTab(InsertTabAction.java:116)
   at org.netbeans.modules.languages.yaml.InsertTabAction$TabReplacer.run(InsertTabAction.java:107)
   at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:317)
   at org.netbeans.modules.languages.yaml.InsertTabAction.actionPerformed(InsertTabAction.java:89)
   at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:339)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1645)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:2859)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2894)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2822)
   at java.awt.Component.processEvent(Component.java:6159)
   at java.awt.Container.processEvent(Container.java:2083)
   at java.awt.Component.dispatchEventImpl(Component.java:4744)
   at java.awt.Container.dispatchEventImpl(Container.java:2141)
   at java.awt.Component.dispatchEvent(Component.java:4572)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1856)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:722)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1000)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:865)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:686)
   at java.awt.Component.dispatchEventImpl(Component.java:4616)
   at java.awt.Container.dispatchEventImpl(Container.java:2141)
   at java.awt.Window.dispatchEventImpl(Window.java:2489)
   at java.awt.Component.dispatchEvent(Component.java:4572)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:704)
   at java.awt.EventQueue.access$400(EventQueue.java:82)
   at java.awt.EventQueue$2.run(EventQueue.java:663)
   at java.awt.EventQueue$2.run(EventQueue.java:661)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
   at java.awt.EventQueue$3.run(EventQueue.java:677)
   at java.awt.EventQueue$3.run(EventQueue.java:675)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:674)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)