/**
  * Split a string of comma separated values.
  *
  * @param string $strString    The string to split.
  *
  * @param string $strDelimiter An optional delimiter.
  *
  * @return array The string chunks
  */
 public static function splitCsv($strString, $strDelimiter = ',')
 {
     if (self::isStringUtilAvailable()) {
         return StringUtil::splitCsv($strString, $strDelimiter);
     }
     return \Contao\String::splitCsv($strString, $strDelimiter);
 }