interface TranslatorInterface

interface TranslatorInterface {
    
    /**
     * Translates the given message.
     *
     * @param string $id
     *   The message id (may also be an object that can be cast to string).
     * @param array $parameters
     *   An array of parameters for the message.
     * @param string|null $domain
     *   The domain for the message or null to use the default.
     * @param string|null $locale
     *   The locale or null to use the default.
     *
     * @return string
     *   The translated string.
     *
     * @throws InvalidArgumentException
     *   If the locale contains invalid characters.
     */
    public function trans($id, array $parameters = [], $domain = NULL, $locale = NULL);

}