Controller/IPNHandler.php
public function getIPNRequestVerifier()
    {
        if (is_null($this->ipnRequestVerifier)) {
            $ipnRequestVerifier = oxNew(\OxidEsales\PayPalModule\Model\IPNRequestVerifier::class);
            $this->setIPNRequestVerifier($ipnRequestVerifier);
        }

        return $this->ipnRequestVerifier;
    }
public function getIPNRequestVerifier()
    {
        if (is_null($this->ipnRequestVerifier)) {
            $ipnRequestVerifier = oxNew(\OxidEsales\PayPalModule\Model\IPNRequestVerifier::class);
            $this->setIPNRequestVerifier($ipnRequestVerifier);
        }

        return $this->ipnRequestVerifier;
    }
public function getIPNRequestVerifier ( ) { if ( is_null ( $ this -> ipnRequestVerifier ) ) { $ ipnRequestVerifier = oxNew ( \ OxidEsales \ PayPalModule \ Model \ IPNRequestVerifier :: class ) ; $ this -> setIPNRequestVerifier ( $ ipnRequestVerifier ) ; } return $ this -> ipnRequestVerifier ; }
Returns IPN request verifier.

@return \OxidEsales\PayPalModule\Model\IPNRequestVerifier
Returns IPN request verifier .