private void groupByNullness(NullAnalysisResult result, SliceRootNode oldRoot, final Map<SliceNode, NullAnalysisResult> map) {
    SliceRootNode root = createNewTree(result, oldRoot, map);

    SliceUsage rootUsage = oldRoot.getCachedChildren().get(0).getValue();
    SliceManager.getInstance(root.getProject())
        .createToolWindow(true, root,
                  true,
                  SliceManager.getElementDescription(
                      null,
                      rootUsage.getElement(),
                      KotlinIdeaCompletionBundle.message(
                          "slice.nullness.tab.title.grouped.by.nullness")));
  }
private void groupByNullness(NullAnalysisResult result, SliceRootNode oldRoot, final Map<SliceNode, NullAnalysisResult> map)