Translatable options for ArrayChoiceList not being translated (moving from ChoiceList)

[Mopster]

Q	A
Bundle version	dev-master (08e8f23)
Symfony version	2.8.31
PHP version	7.1.12

Expected behavior

Using the deprecated ChoiceList the options are translatable, when moving the our choice lists to the new ArrayChoiceList, the options are no longer translatable.

Current code

use Symfony\Component\Form\ChoiceList\ArrayChoiceList;

use JMS\TranslationBundle\Model\Message;

abstract class TranslatableArrayChoiceList extends ArrayChoiceList
{
    // @todo Move to a new domain
    const TRANSLATION_DOMAIN = 'messages';

    public static function getTranslatableChoices()
    {
        throw new \RuntimeException('No translation choices found');
    }

    /**
     * Extractable status translation labels.
     */
    public static function getTranslationMessages()
    {
        $messages = array();
        foreach (static::getTranslatableChoices() as $choice) {
            $message = new Message($choice, static::TRANSLATION_DOMAIN);
            $message->setMeaning('Item for a dropdown select list.');  // Extra metadata for the translator
            $messages[] = $message;
        }
        return $messages;
    }
}

use JMS\TranslationBundle\Translation\TranslationContainerInterface;

class EmailPrivacyChoiceList extends TranslatableArrayChoiceList implements TranslationContainerInterface
{
    public function __construct()
    {
        parent::__construct(self::getTranslatableChoices());
    }

    public static function getTranslatableChoices()
    {
        return [
            'emails with this contact are not private' => false,
            'emails with this contact are private' => true
        ];
    }

Previous code

use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceList;

abstract class TranslatableChoiceList extends ChoiceList
{
    const TRANSLATION_DOMAIN = 'messages';

    public static function getTranslatableChoices()
    {
        throw new \RuntimeException('No translation choices found');
    }

    /**
     * Extractable status translation labels.
     */
    public static function getTranslationMessages()
    {
        $messages = array();
        foreach (static::getTranslatableChoices() as $choice) {
            $message = new Message($choice, static::TRANSLATION_DOMAIN);
            $message->setMeaning('Item for a dropdown select list.');  // Extra metadata for the translator
            $messages[] = $message;
        }
        return $messages;
    }
}

use JMS\TranslationBundle\Translation\TranslationContainerInterface;

class EmailPrivacyChoiceList extends TranslatableChoiceList implements TranslationContainerInterface
{
    public function __construct()
    {
        parent::__construct([false, true], self::getTranslatableChoices());
    }

    public static function getTranslatableChoices()
    {
        return [
            'emails with this contact are not private',
            'emails with this contact are private'
        ];
    }
}

[Mopster]

Had another go at this and this time I seem to got something right, no longer an issue. I used the choice_loader option by implementing ChoiceLoaderInterface on the TranslatableArrayChoiceList (with some other small code changes).