java.lang.NullPointerException
        at org.netbeans.modules.java.editor.semantic.RemoveUnusedImportFix.implement(RemoveUnusedImportFix.java:103)
        at org.netbeans.modules.editor.hints.HintsUI$1.run(HintsUI.java:573)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1030)