getPlainSubject example

'message' => 'Could not create mail object.',
            ]);

            return;
        }

        $this->view->assign([
            'mail' => [
                'error' => false,
                'content' => $mail->getPlainBodyText(),
                'contentHtml' => $mail->getPlainBody(),
                'subject' => $mail->getPlainSubject(),
                'to' => implode(', ', $mail->getTo()),
                'fromMail' => $mail->getFrom(),
                'fromName' => $mail->getFromName(),
                'sent' => false,
                'isHtml' => !empty($mail->getPlainBody()),
                'orderId' => $orderId,
            ],
        ]);
    }

    /** * Retrieves all available mail templates * * @return void */

'mailname' => $templateName,
        ]);

        if (!empty($result)) {
            $context['EventResult'] = $result->getValues();
        }

        $mail = Shopware()->TemplateMail()->createMail($templateName, $context, $shop);

        $return = [
            'content' => $mail->getPlainBodyText() ?? '',
            'subject' => $mail->getPlainSubject() ?? '',
            'email' => trim($user['email']),
            'frommail' => $mail->getFrom(),
            'fromname' => $mail->getFromName(),
        ];

        $return = $this->eventManager->filter('Shopware_Controllers_Backend_OrderState_Filter', $return, [
            'subject' => Shopware()->Front(),
            'id' => $orderId,
            'status' => $statusId,
            'mailname' => $templateName,
            'mail' => $mail,