/**
  * Update a content translation.
  *
  * @param Content $content     A content entity
  * @param array   $translation array('content' => 'foo', 'title' => 'foo')
  * @param string  $locale      A string with a locale value as 'en' or 'fr'
  * @param bool    $reset       A boolean in case of you whant to reset the values of the translation
  */
 private function updateTranslation(Content $content, $translation, $locale = 'en', $reset = false)
 {
     if (isset($translation['title'])) {
         $content->setTitle($reset ? null : $translation['title']);
     }
     if (isset($translation['content'])) {
         $content->setContent($reset ? null : $translation['content']);
     }
     $content->setTranslatableLocale($locale);
     $content->setModified();
     $this->manager->persist($content);
     $this->manager->flush();
 }