java.lang.ClassCastException: com.sun.tools.javac.tree.JCTree$JCBlock cannot be cast to com.sun.source.tree.ExpressionTree
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.rewriteChildren(ImmutableTreeTranslator.java:835)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitExpressionStatement(ImmutableTreeTranslator.java:409)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.visitExpressionStatement(ImmutableTreeTranslator.java:92)
   at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1178)
   at org.netbeans.modules.java.source.transform.ImmutableTreeTranslator.translate(ImmutableTreeTranslator.java:134)
   at org.netbeans.api.java.source.TreeUtilities$1.translate(TreeUtilities.java:960)
   at org.netbeans.api.java.source.TreeUtilities.translate(TreeUtilities.java:969)
   at org.netbeans.api.java.source.WorkingCopy.processCurrentCompilationUnit(WorkingCopy.java:514)
   at org.netbeans.api.java.source.WorkingCopy.getChanges(WorkingCopy.java:672)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:668)
   at org.netbeans.api.java.source.JavaSource$1.run(JavaSource.java:655)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:482)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:643)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:154)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:138)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:211)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:208)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:356)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:71)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:208)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:432)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:403)
   at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:676)
   at org.netbeans.modules.java.hints.jackpot.impl.JavaFixImpl.implement(JavaFixImpl.java:83)
   at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:762)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)