java.lang.NullPointerException
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitIdentifier(ClassModelFactory.java:255)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitIdentifier(ClassModelFactory.java:108)
   at com.sun.tools.javafx.tree.JFXIdent.accept(JFXIdent.java:66)
   at com.sun.javafx.api.tree.JavaFXTreePathScanner.scan(JavaFXTreePathScanner.java:63)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.visitOverrideClassVar(JavaFXTreeScanner.java:403)
   at com.sun.tools.javafx.tree.JFXOverrideClassVar.accept(JFXOverrideClassVar.java:76)
   at com.sun.javafx.api.tree.JavaFXTreePathScanner.scan(JavaFXTreePathScanner.java:63)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.scanAndReduce(JavaFXTreeScanner.java:84)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.scan(JavaFXTreeScanner.java:94)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.scanAndReduce(JavaFXTreeScanner.java:111)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.visitClassDeclaration(JavaFXTreeScanner.java:250)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitClassDeclaration(ClassModelFactory.java:196)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitClassDeclaration(ClassModelFactory.java:108)
   at com.sun.tools.javafx.tree.JFXClassDeclaration.accept(JFXClassDeclaration.java:185)
   at com.sun.javafx.api.tree.JavaFXTreePathScanner.scan(JavaFXTreePathScanner.java:63)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.scan(JavaFXTreeScanner.java:94)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.scanAndReduce(JavaFXTreeScanner.java:111)
   at com.sun.javafx.api.tree.JavaFXTreeScanner.visitCompilationUnit(JavaFXTreeScanner.java:122)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitCompilationUnit(ClassModelFactory.java:150)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$ClassModelPopulator.visitCompilationUnit(ClassModelFactory.java:108)
   at com.sun.tools.javafx.tree.JFXScript.accept(JFXScript.java:144)
   at com.sun.javafx.api.tree.JavaFXTreePathScanner.scan(JavaFXTreePathScanner.java:63)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$1.run(ClassModelFactory.java:650)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory$1.run(ClassModelFactory.java:647)
   at org.netbeans.modules.javafx.source.parsing.LegacyUserTask.run(LegacyUserTask.java:68)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:151)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:135)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:192)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:103)
   at org.netbeans.api.javafx.source.JavaFXSource.runUserActionTask(JavaFXSource.java:250)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory.createClassModel(ClassModelFactory.java:647)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory.classModelFor(ClassModelFactory.java:616)
   at org.netbeans.modules.javafx.refactoring.impl.plugins.RenamePackagePlugin.prepare(RenamePackagePlugin.java:140)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:419)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:403)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:214)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:803)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1356)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1894)