"AWT-EventQueue-0" prio=7 tid=0xac88560 nid=0x554 runnable [0xd6e1000..0xd71fdbc]
        at org.openide.nodes.Children$Dupl.getKey(Children.java:1911)
        at org.openide.nodes.Children$Dupl.equals(Children.java:1959)
        at java.util.ArrayList.indexOf(ArrayList.java:203)
        at java.util.ArrayList.contains(ArrayList.java:184)
        at java.util.AbstractCollection.retainAll(AbstractCollection.java:387)
        at org.openide.nodes.Children.updateOrder(Children.java:644)
        at org.openide.nodes.Children.setEntries(Children.java:520)
        at org.openide.nodes.Children$3.run(Children.java:1713)
        at org.openide.util.Mutex.postRequest(Mutex.java:815)
        at org.openide.util.Mutex.postWriteRequest(Mutex.java:353)
        at org.openide.nodes.Children$Keys.applyKeys(Children.java:1721)
        at org.openide.nodes.Children$Keys.setKeys(Children.java:1703)
        at org.netbeans.modules.debugger.support.nodes.WatchesRootNode$WatchesRootChildren.set(WatchesRootNode.java:248)
        at org.netbeans.modules.debugger.support.nodes.WatchesRootNode$WRListener.setWatches(WatchesRootNode.java:364)
        at org.netbeans.modules.debugger.support.nodes.WatchesRootNode$WRListener.propertyChange(WatchesRootNode.java:349)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.netbeans.modules.debugger.support.DebuggerSupport.fireWatchCreated(DebuggerSupport.java:652)
        at org.netbeans.modules.debugger.support.DebuggerSupport.addWatch(DebuggerSupport.java:525)
        at org.netbeans.modules.debugger.delegator.DelegatingDebugger.createWatch(DelegatingDebugger.java:280)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:87)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)
        at org.netbeans.modules.editor.NbToolTip$Request.propertyChange(NbToolTip.java:195)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.openide.text.Annotation.firePropertyChange(Annotation.java:118)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:94)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)
        at org.netbeans.modules.editor.NbToolTip$Request.propertyChange(NbToolTip.java:195)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.openide.text.Annotation.firePropertyChange(Annotation.java:118)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:94)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)
        at org.netbeans.modules.editor.NbToolTip$Request.propertyChange(NbToolTip.java:195)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.openide.text.Annotation.firePropertyChange(Annotation.java:118)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:94)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)
        at org.netbeans.modules.editor.NbToolTip$Request.propertyChange(NbToolTip.java:195)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.openide.text.Annotation.firePropertyChange(Annotation.java:118)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:94)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)
        at org.netbeans.modules.editor.NbToolTip$Request.propertyChange(NbToolTip.java:195)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:152)
        at org.openide.text.Annotation.firePropertyChange(Annotation.java:118)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.run(ToolTipAnnotation.java:94)
        at org.netbeans.editor.BaseDocument.render(BaseDocument.java:750)
        at org.netbeans.modules.debugger.support.java.ToolTipAnnotation.getShortDescription(ToolTipAnnotation.java:50)