notnull

java/java-impl/src/com/intellij/slicer/SliceNode.java

@@ -144,6 +144,7 @@ public class SliceNode extends AbstractTreeNode<SliceUsage> implements Duplicate
   @Override
   protected PresentationData createPresentation() {
     return new PresentationData(){
+      @NotNull
       @Override
       public Object[] getEqualityObjects() {
         return ArrayUtil.append(super.getEqualityObjects(), changed);