Model/Factory/VaultTokenFactory.php
private function getExpirationDate($expiryMonth, $expiryYear) {
        $expDate = new DateTime(
            $expiryYear
            . '-'
            . $expiryMonth
            . '-'
            . '01'
            . ' '
            . '00:00:00',
            new DateTimeZone('UTC')
        );

        return $expDate->add(new DateInterval('P1M'))->format('Y-m-d 00:00:00');
    }
private function getExpirationDate($expiryMonth, $expiryYear) {
        $expDate = new DateTime(
            $expiryYear
            . '-'
            . $expiryMonth
            . '-'
            . '01'
            . ' '
            . '00:00:00',
            new DateTimeZone('UTC')
        );

        return $expDate->add(new DateInterval('P1M'))->format('Y-m-d 00:00:00');
    }
private function getExpirationDate ( $ expiryMonth , $ expiryYear ) { $ expDate = new DateTime ( $ expiryYear . '-' . $ expiryMonth . '-' . '01' . ' ' . '00:00:00' , new DateTimeZone ( 'UTC' ) ) ; return $ expDate -> add ( new DateInterval ( 'P1M' ) ) -> format ( 'Y-m-d 00:00:00' ) ; }
Returns the date time object with the given expiration month and year.

@param string $expiryMonth
@param string $expiryYear
@return string
Returns the date time object with the given expiration month and year .