org.openide.text.DataEditorSupport$1: The file cannot be safely opened with encoding UTF-8. Do you want to continue opening it?
   at org.openide.text.DataEditorSupport.createAndThrowIncorrectCharsetUQE(DataEditorSupport.java:505)
   at org.openide.text.DataEditorSupport.loadFromStreamToKit(DataEditorSupport.java:496)
   at org.openide.text.CloneableEditorSupport.loadDocument(CloneableEditorSupport.java:2128)
   at org.openide.text.CloneableEditorSupport.access$2800(CloneableEditorSupport.java:129)
   at org.openide.text.CloneableEditorSupport$Listener.run(CloneableEditorSupport.java:2929)
   at org.openide.text.CloneableEditorSupport$3.doRun(CloneableEditorSupport.java:722)
   at org.openide.text.CloneableEditorSupport$3.run(CloneableEditorSupport.java:689)
   at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:317)
   at org.openide.text.NbDocument.runAtomic(NbDocument.java:422)
   at org.openide.text.CloneableEditorSupport$3.doRun(CloneableEditorSupport.java:699)
   at org.openide.text.CloneableEditorSupport$3.run(CloneableEditorSupport.java:689)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)