/**
  * get additional scripts
  */
 protected function getAdditionalScripts($serial)
 {
     $addScripts = $this->getParam("ug_additional_scripts");
     $addScripts = trim($addScripts);
     if (empty($addScripts)) {
         return $addScripts;
     }
     //add tabs prefix to each line
     $addScripts = UniteFunctionsUG::addPrefixToEachLine($addScripts, self::LINE_PREFIX4);
     //replace API tab
     $varAPI = "ugapi" . $serial;
     $addScripts = str_replace("[api]", $varAPI, $addScripts);
     return $addScripts;
 }