private function add_kb_search_item()
{
$kb_help_center_item = new WPSEO_Help_Center_Item('knowledge-base', __('Knowledge base', 'wordpress-seo'), array('content' => '<div class="wpseo-kb-search"></div>', 'view_arguments' => array('identifier' => $this->tab->get_name())), 'dashicons-search');
array_push($this->help_center_items, $kb_help_center_item);
}