@SuppressWarnings("unused")
  protected static void appendCoverageInfo(ColoredTreeCellRenderer cellRenderer, @Nls String coverageInfo) {
    if (coverageInfo != null) {
      cellRenderer.append(" (" + coverageInfo + ")", SimpleTextAttributes.GRAY_ATTRIBUTES);
    }
  }
@SuppressWarnings("unused")
  protected static void appendCoverageInfo(ColoredTreeCellRenderer cellRenderer, @Nls String coverageInfo)