at java.lang.Thread.dumpStack(Thread.java:1071)
	at org.openide.text.PositionRef$Manager$PositionKind.<init>(PositionRef.java:447)
	at org.openide.text.PositionRef$Manager$Kind.toMemory(PositionRef.java:428)
	at org.openide.text.PositionRef$Manager.addPosition(PositionRef.java:347)
	at org.openide.text.PositionRef.init(PositionRef.java:80)
	at org.openide.text.PositionRef.<init>(PositionRef.java:75)
	at org.openide.text.PositionRef.<init>(PositionRef.java:52)
	at org.openide.text.CloneableEditorSupport.createPositionRef(CloneableEditorSupport.java:800)
	at org.netbeans.modules.java.parser.DocumentModelBuilder.createStableBounds(DocumentModelBuilder.java:172)
	at org.netbeans.modules.java.parser.DocumentModelBuilder.setHeaderBounds(DocumentModelBuilder.java:131)
	at org.netbeans.modules.java.gj.V8TreeTranslator._case(V8TreeTranslator.java:266)
	at org.netbeans.lib.javac.v8.tree.Tree$ClassDef.visit(Tree.java:407)
	at org.netbeans.modules.java.gj.V8TreeTranslator._case(V8TreeTranslator.java:188)
	at org.netbeans.lib.javac.v8.tree.Tree$TopLevel.visit(Tree.java:344)
	at org.netbeans.modules.java.gj.V8TreeTranslator.process(V8TreeTranslator.java:94)
	at org.netbeans.modules.java.gj.ParserEngine.completeRequest(ParserEngine.java:360)
	at org.netbeans.modules.java.gj.ParserEngine.parseObject(ParserEngine.java:176)
	at org.netbeans.modules.java.gj.JavaParserEngine.process(JavaParserEngine.java:72)
	at org.netbeans.modules.java.parser.ParsingSupport$Processor.process(ParsingSupport.java:711)
	at org.netbeans.modules.java.parser.ParsingSupport$Processor.parseLockModel(ParsingSupport.java:662)
	at org.netbeans.modules.java.parser.ParsingSupport$Processor.run(ParsingSupport.java:593)
	at org.openide.util.Task.run(Task.java:136)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:677)