java.lang.NullPointerException
   at org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:116)
   at org.netbeans.api.java.source.TreePathHandle$ElementDelegate.resolveElement(TreePathHandle.java:713)
   at org.netbeans.api.java.source.TreePathHandle.resolveElement(TreePathHandle.java:162)
   at org.netbeans.modules.spring.beans.refactoring.SpringRefactorings$1.run(SpringRefactorings.java:71)
   at org.netbeans.modules.spring.beans.refactoring.SpringRefactorings$1.run(SpringRefactorings.java:67)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:498)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:90)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:448)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:419)
   at org.netbeans.modules.spring.beans.refactoring.SpringRefactorings.getRenamedProperty(SpringRefactorings.java:67)
   at org.netbeans.modules.spring.beans.refactoring.plugins.SpringFindUsagesPlugin.prepareMethodRefactoring(SpringFindUsagesPlugin.java:125)
   at org.netbeans.modules.spring.beans.refactoring.plugins.SpringFindUsagesPlugin.prepare(SpringFindUsagesPlugin.java:75)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:417)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:401)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:212)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare$2.run(ParametersPanel.java:1061)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)