$builder
            ->add('template', MailTemplateType::class, [
                'required' => false,
                'mapped' => false,
                'query_builder' => function (EntityRepository $er) {
                    return $er->createQueryBuilder('mt')
                        ->andWhere('mt.id IN (:ids)')
                        ->setParameter('ids', [
                            $this->eccubeConfig['eccube_order_mail_template_id'],
                            2, // 追加のテンプレートID
                            3, // 追加のテンプレートID
                            
                        ])
                        ->orderBy('mt.id', 'ASC');
                },
            ])
        ;