DalExtension example

AssociationField::RESTRICT => new RestrictDelete(),
            default => throw new \RuntimeException(\sprintf('onDelete property %s are not supported on field %s', $field['onDelete'], $field['name'])),
        };
    }

    private static function getExtension(EntityDefinition $reference): ?DalExtension
    {
        if (str_starts_with($reference->getEntityName(), 'custom_entity_') || str_starts_with($reference->getEntityName(), 'ce_')) {
            return null;
        }

        return new DalExtension();
    }
}