javax.swing.text.BadLocationException: Invalid offset=13793 > (docLen+1)=13787
   at org.netbeans.modules.editor.lib2.document.EditorDocumentContent.checkOffsetInContent(EditorDocumentContent.java:280)
   at org.netbeans.modules.editor.lib2.document.EditorDocumentContent.createPosition(EditorDocumentContent.java:192)
   at javax.swing.text.AbstractDocument.createPosition(AbstractDocument.java:831)
   at org.netbeans.api.editor.fold.Fold.<init>(Fold.java:145)
   at org.netbeans.api.editor.fold.FoldHierarchy$ApiPackageAccessorImpl.createFold(FoldHierarchy.java:355)
   at org.netbeans.modules.editor.fold.FoldOperationImpl.createFold(FoldOperationImpl.java:156)
   at org.netbeans.spi.editor.fold.FoldOperation.addToHierarchy(FoldOperation.java:136)
   at org.netbeans.modules.java.editor.fold.JavaElementFoldManager$CommitFolds.run(JavaElementFoldManager.java:402)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1330)
   at org.netbeans.modules.java.editor.fold.JavaElementFoldManager$CommitFolds.run(JavaElementFoldManager.java:357)
   at org.netbeans.modules.java.editor.fold.JavaElementFoldManager$JavaElementFoldTask$1.run(JavaElementFoldManager.java:302)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:691)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)