java.lang.IllegalArgumentException: (endOffset=3546 - startOffset=3545) < (startGuardedLength=1 + endGuardedLength=1)
   at org.netbeans.api.editor.fold.Fold.<init>(Fold.java:131)
   at org.netbeans.api.editor.fold.FoldHierarchy$ApiPackageAccessorImpl.createFold(FoldHierarchy.java:371)
   at org.netbeans.modules.editor.fold.FoldOperationImpl.createFold(FoldOperationImpl.java:170)
   at org.netbeans.spi.editor.fold.FoldOperation.addToHierarchy(FoldOperation.java:204)
   at org.netbeans.modules.editor.fold.FoldOperationImpl$Refresher.run(FoldOperationImpl.java:659)
   at org.netbeans.modules.editor.fold.FoldOperationImpl.update(FoldOperationImpl.java:483)
   at org.netbeans.spi.editor.fold.FoldOperation.update(FoldOperation.java:406)
   at org.netbeans.modules.csl.editor.fold.GsfFoldManager$CommitFolds.run(GsfFoldManager.java:662)
   at org.netbeans.editor.BaseDocument.render(BaseDocument.java:1383)
   at org.netbeans.modules.csl.editor.fold.GsfFoldManager$CommitFolds.run(GsfFoldManager.java:627)
   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:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)