protected function normalizeId($id)
    {
        if (null !== $this->getSessionPrefix()) {
            return $this->getSessionPrefix() . self::ID_SEPARATOR . $id;
        }

        return $id;
    }
protected function normalizeId($id)
    {
        if (null !== $this->getSessionPrefix()) {
            return $this->getSessionPrefix() . self::ID_SEPARATOR . $id;
        }

        return $id;
    }
protected function normalizeId ( $ id ) { if ( null !== $ this -> getSessionPrefix ( ) ) { return $ this -> getSessionPrefix ( ) . self :: ID_SEPARATOR . $ id ; } return $ id ; }
Method prepare id

@param string $id
@return string
Method prepare id