public static function getItemBlacklist()
 {
     if (self::$itemBlacklist !== NULL) {
         return self::$itemBlacklist;
     }
     $str = self::getString('Item Blacklist');
     if (empty($str)) {
         self::$itemBlacklist = array();
         return self::$itemBlacklist;
     }
     $list = array();
     $parts = explode(',', $str);
     foreach ($parts as $part) {
         $part = trim($part);
         if (empty($part)) {
             continue;
         }
         $stack = self::getItemBlacklist_Type($part);
         if ($stack == NULL) {
             continue;
         }
         $list[] = $stack;
     }
     self::$itemBlacklist = $list;
     return self::$itemBlacklist;
 }