org.netbeans.tax.ReadOnlyException: [org.netbeans.tax.TreeComment@15355fb, org.netbeans.tax.TreeComment@31f54b, org.netbeans.tax.TreeComment@1df414a, org.netbeans.tax.TreeComment@378102, org.netbeans.tax.TreeElementDecl@1f6b092, org.netbeans.tax.TreeElementDecl@c2496e, org.netbeans.tax.TreeElementDecl@162db4d, org.netbeans.tax.TreeElementDecl@12bb06e]Value is read-only.
   at org.netbeans.tax.TreeObject.checkReadOnly(TreeObject.java:245)
Caused: org.netbeans.tax.TreeUnsupportedOperationException: org.netbeans.tax.ReadOnlyException: [org.netbeans.tax.TreeComment@15355fb, org.netbeans.tax.TreeComment@31f54b, org.netbeans.tax.TreeComment@1df414a, org.netbeans.tax.TreeComment@378102, org.netbeans.tax.TreeElementDecl@1f6b092, org.netbeans.tax.TreeElementDecl@c2496e, org.netbeans.tax.TreeElementDecl@162db4d, org.netbeans.tax.TreeElementDecl@12bb06e]Value is read-only.
   at org.netbeans.tax.TreeObjectList.checkUnsupportedOperation(TreeObjectList.java:435)
   at org.netbeans.tax.TreeObjectList.addNoFire(TreeObjectList.java:657)
   at org.netbeans.tax.TreeObjectList.add(TreeObjectList.java:666)
   at org.netbeans.tax.io.XNIBuilder$XMLBuilder.appendChild(XNIBuilder.java:1694)
   at org.netbeans.tax.io.XNIBuilder$XMLBuilder.startAttlist(XNIBuilder.java:1149)
   at org.netbeans.tax.io.XNIBuilder$XMLBuilder.startAttlist(XNIBuilder.java:1135)
   at org.apache.xerces.impl.dtd.XMLDTDProcessor.startAttlist(XMLDTDProcessor.java:0)
   at org.apache.xerces.impl.XMLDTDScannerImpl.scanAttlistDecl(XMLDTDScannerImpl.java:0)
   at org.apache.xerces.impl.XMLDTDScannerImpl.scanDecls(XMLDTDScannerImpl.java:0)
   at org.apache.xerces.impl.XMLDTDScannerImpl.scanDTDExternalSubset(XMLDTDScannerImpl.java:0)
   at org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(XMLDocumentScannerImpl.java:0)
   at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:0)
   at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:0)
   at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:0)
   at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:0)
   at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:0)
   at org.netbeans.tax.io.XNIBuilder$XMLBuilder.parse(XNIBuilder.java:346)
   at org.netbeans.tax.io.XNIBuilder.buildDocument(XNIBuilder.java:172)
   at org.netbeans.modules.xml.tax.parser.XMLParsingSupport.parse(XMLParsingSupport.java:71)
   at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.openDocumentRoot(LayerUtils.java:328)
   at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.<init>(WritableXMLFileSystem.java:140)
   at org.netbeans.modules.apisupport.project.api.LayerHandle.layer(LayerHandle.java:155)
   at org.netbeans.modules.apisupport.project.ui.wizard.common.CreatedModifiedFiles$LayerModifications.run(CreatedModifiedFiles.java:898)
   at org.netbeans.modules.apisupport.project.ui.wizard.common.CreatedModifiedFiles$CreateLayerEntry.run(CreatedModifiedFiles.java:1041)
   at org.netbeans.modules.apisupport.project.ui.wizard.common.CreatedModifiedFiles.run(CreatedModifiedFiles.java:329)
   at org.netbeans.modules.apisupport.project.ui.wizard.loader.NewLoaderIterator.instantiate(NewLoaderIterator.java:99)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1048)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:617)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:426)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:247)
   at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(TemplateWizardIteratorWrapper.java:160)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1569)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1521)
   at org.openide.WizardDescriptor.access$1800(WizardDescriptor.java:139)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2134)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)