@Override
  protected Pair<JComponent, Dimension> createDiffPanel(JPanel root, ExcludingTraversalPolicy traversalPolicy) {
    myDiffPanel = DiffManager.getInstance().createRequestPanel(myProject, this, ApplicationManager.getApplication().isUnitTestMode() ? null : getFrame());
    myDiffPanel.setRequest(new MessageDiffRequest(""));
    return Pair.create(myDiffPanel.getComponent(), null);
  }
@Override
  protected Pair<JComponent, Dimension> createDiffPanel(JPanel root, ExcludingTraversalPolicy traversalPolicy)