org.netbeans.editor.GuardedException: Modification prohibited
   at org.netbeans.editor.BaseDocument.checkModifiable(BaseDocument.java:998)
   at org.netbeans.editor.BaseDocument.replace(BaseDocument.java:983)
   at org.netbeans.modules.xml.multiview.Utils$1.run(Utils.java:116)
   at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:317)
   at org.openide.text.NbDocument.runAtomic(NbDocument.java:422)
   at org.netbeans.modules.xml.multiview.Utils.replaceDocument(Utils.java:130)
   at org.netbeans.modules.xml.multiview.XmlMultiViewEditorSupport$DocumentSynchronizer.reloadModelFromData(XmlMultiViewEditorSupport.java:720)
   at org.netbeans.modules.xml.multiview.XmlMultiViewDataSynchronizer.reloadModel(XmlMultiViewDataSynchronizer.java:230)
   at org.netbeans.modules.xml.multiview.XmlMultiViewDataSynchronizer$3.run(XmlMultiViewDataSynchronizer.java:100)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)