Service definition of TranslationChecker only avalable for ORM

Environment

Sonata packages

sonata-project/admin-bundle                3.16.0             The missing Symfony Ad...
sonata-project/block-bundle                3.3.2              Symfony SonataBlockBundle
sonata-project/cache                       1.0.7              Cache library
sonata-project/cache-bundle                2.3.1              This bundle provides c...
sonata-project/core-bundle                 3.3.0              Symfony SonataCoreBundle
sonata-project/datagrid-bundle             2.2.1              Symfony SonataDatagrid...
sonata-project/doctrine-phpcr-admin-bundle dev-master 119405e Symfony Sonata / Integ...
sonata-project/exporter                    1.7.1              Lightweight Exporter l...
sonata-project/seo-bundle                  2.1.0              Symfony SonataSeoBundle
sonata-project/translation-bundle          2.1.1              SonataTranslationBundle

Symfony packages

symfony/assetic-bundle     v2.8.1 Integrates Assetic into Symfony2
symfony/monolog-bundle     v3.1.0 Symfony MonologBundle
symfony/phpunit-bridge     v3.2.7 Symfony PHPUnit Bridge
symfony/polyfill-apcu      v1.3.0 Symfony polyfill backporting apcu_* functions to l...
symfony/polyfill-intl-icu  v1.3.0 Symfony polyfill for intl's ICU-related data and c...
symfony/polyfill-mbstring  v1.3.0 Symfony polyfill for the Mbstring extension
symfony/polyfill-php56     v1.3.0 Symfony polyfill backporting some PHP 5.6+ feature...
symfony/polyfill-php70     v1.3.0 Symfony polyfill backporting some PHP 7.0+ feature...
symfony/polyfill-util      v1.3.0 Symfony utilities for portability of PHP codes
symfony/security-acl       v3.0.0 Symfony Security Component - ACL (Access Control L...
symfony/swiftmailer-bundle v2.5.4 Symfony SwiftmailerBundle
symfony/symfony            v3.2.7 The Symfony PHP framework

PHP version

ALL

Subject

It seems as the service definiton for the translation checker is available for orm persistence only. Only there the sonata_translation.checker.translatable has a service defintion. When using an other persistence layer the service is requesetd as an argument, but never defined.

Steps to reproduce

use the following config:

sonata_translation:
    locales: '%locales%'
    default_locale: '%locale%'
    phpcr: true

in an application.

Expected results

No Exception, Service definition exists

Actual results

ServiceNotFoundException in ContainerBuilder.php line 803:
You have requested a non-existent service "sonata_translation.checker.translatable".
in ContainerBuilder.php line 803
at ContainerBuilder->getDefinition('sonata_translation.checker.translatable') in SonataTranslationExtension.php line 97
at SonataTranslationExtension->configureChecker(object(ContainerBuilder), array('phpcr' => array('implements' => array('Sonata\\TranslationBundle\\Model\\Phpcr\\TranslatableInterface', 'Symfony\\Cmf\\Bundle\\CoreBundle\\Translatable\\TranslatableInterface'), 'instanceof' => array()))) in SonataTranslationExtension.php line 88
at SonataTranslationExtension->load(array(array('locales' => array('en', 'fr', 'de'), 'default_locale' => 'en', 'phpcr' => array('enabled' => true))), object(ContainerBuilder)) in MergeExtensionConfigurationPass.php line 59
at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in MergeExtensionConfigurationPass.php line 39
at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in Compiler.php line 120
at Compiler->compile(object(ContainerBuilder)) in ContainerBuilder.php line 573
at ContainerBuilder->compile() in Kernel.php line 487
at Kernel->initializeContainer() in Kernel.php line 116
at Kernel->boot() in Kernel.php line 165
at Kernel->handle(object(Request)) in app_dev.php line 39
at require('/home/maximilian/OpenSource/Cmf/cmf-sandbox/web/app_dev.php') in router_dev.php line 40

sonata-project / SonataTranslationBundle

Service definition of TranslationChecker only avalable for ORM #167