/**
 * Sets the translation for a given locale
 *
 * @param      $translation The translation object
 * @param     string $locale Locale to use for the translation, e.g. 'fr_FR'
 *
 * @return     The current object (for fluent API support)
 */
public function setTranslation($translation, $locale = '')
{
    $translation->set($locale);
    $this->add($translation);
    $this->currentTranslations[$locale] = $translation;

    return $this;
}