@Override
  public String valueOf(NodeDescriptor node) {
    final CoverageEngine coverageEngine = mySuitesBundle.getCoverageEngine();
    final Project project = node.getProject();
    return coverageEngine.createCoverageViewExtension(project, mySuitesBundle).getPercentage(myColumnIdx, (AbstractTreeNode<?>)node);
  }
@Override
  public String valueOf(NodeDescriptor node)