public static function is_calculated(ImsXmlReader $item)
 {
     if (!$item->has_templateDeclaration()) {
         return false;
     }
     $templates = $item->list_templateDeclaration();
     foreach ($templates as $template) {
         $base_type = $template->baseType;
         if ($base_type != Qti::BASETYPE_FLOAT && $base_type != Qti::BASETYPE_INTEGER) {
             return false;
         }
     }
     return true;
 }