java.lang.NullPointerException
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory.createClassModel(ClassModelFactory.java:672)
   at org.netbeans.modules.javafx.refactoring.repository.ClassModelFactory.classModelFor(ClassModelFactory.java:641)
   at org.netbeans.modules.javafx.refactoring.impl.plugins.MoveRefactoringPlugin$6.prepareTransformations(MoveRefactoringPlugin.java:433)
   at org.netbeans.modules.javafx.refactoring.impl.plugins.elements.BaseRefactoringElementImplementation.getTransformations(BaseRefactoringElementImplementation.java:177)
   at org.netbeans.modules.javafx.refactoring.impl.plugins.elements.BaseRefactoringElementImplementation.hasChanges(BaseRefactoringElementImplementation.java:141)
   at org.netbeans.modules.javafx.refactoring.impl.plugins.MoveRefactoringPlugin.prepare(MoveRefactoringPlugin.java:284)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:419)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:403)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:214)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:804)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1369)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1907)