private void selectFirstSelectableItem() {
    for (int i = 0; i < myWizardTree.getRowCount(); i++) {
      TreePath path = myWizardTree.getPathForRow(i);
      if (getTreeStep().isSelectable(path.getLastPathComponent(), extractUserObject(path.getLastPathComponent()))) {
        myWizardTree.setSelectionPath(path);
        break;
      }
    }
  }
private void selectFirstSelectableItem()