/**
  * Returns a singleton instance of Uri_Redirects
  * @uses is_array()
  * 
  * @access public
  * @return Uri_Redirects
  */
 public static function i()
 {
     if (!self::$_singleton instanceof Uri_Redirects) {
         include_once Usu_Main::i()->getVar('includes_path') . 'uri_redirects_array.php';
         if (isset($usu5_uri_redirects) && is_array($usu5_uri_redirects) && !empty($usu5_uri_redirects)) {
             self::$redirects = $usu5_uri_redirects;
         }
         self::$_singleton = new self();
     }
     return self::$_singleton;
 }