java.lang.IllegalArgumentException: org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$InitializerElement@33456ed0
   at com.sun.tools.javac.model.JavacElements.cast(JavacElements.java:652)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:585)
   at com.sun.tools.javac.model.JavacElements.getTreeAndTopLevel(JavacElements.java:614)
   at com.sun.tools.javac.api.JavacTrees.getPath(JavacTrees.java:329)
   at com.sun.tools.javac.api.JavacTrees.getPath(JavacTrees.java:321)
   at org.netbeans.modules.refactoring.java.callhierarchy.Call.createReference(Call.java:241)
   at org.netbeans.modules.refactoring.java.callhierarchy.Call.createUsage(Call.java:199)
   at org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$CallersTask.run(CallHierarchyTasks.java:426)
   at org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$CallersTask.run(CallHierarchyTasks.java:318)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:493)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:593)
   at org.netbeans.modules.parsing.api.ParserManager$MultiUserTaskAction.run(ParserManager.java:191)
   at org.netbeans.modules.parsing.api.ParserManager$MultiUserTaskAction.run(ParserManager.java:163)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:203)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:108)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:443)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:414)
   at org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$CallersTask.processFiles(CallHierarchyTasks.java:493)
   at org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$CallersTask.runTask(CallHierarchyTasks.java:355)
   at org.netbeans.modules.refactoring.java.callhierarchy.CallHierarchyTasks$CallTaskBase.run(CallHierarchyTasks.java:305)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)