public function batch_categories()
{
  $cid = $this->app->input->get('cid', '', 'array');
  if ( $task == 'copy' )
    {
        $categories = $this->getCategories($cid);

        foreach ($categories as $cat)
        {
            list($title, $alias) = $this->_generateNewTitle($cat->id, $cat->alias, $cat->name);

            $_POST['name']  = $title;
            $_POST['alias']  = $alias;
            $_POST['parent_id'] = intval($cat_parent);
            $_POST['catid'] = 0;
            $this->_save();
        }

        $this->app->enqueueMessage(JText::_('BATCH_COPY_SUCCESS'));
    }
}

protected function _save()
{
 $post       = $this->app->input->getArray();
}