Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/translation/TranslatorInterface.php

@@ -0,0 +1,75 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation;
+
+/**
+ * TranslatorInterface.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+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 $locale     The locale or null to use the default
+     *
+     * @throws \InvalidArgumentException If the locale contains invalid characters
+     *
+     * @return string The translated string
+     *
+     * @api
+     */
+    public function trans($id, array $parameters = array(), $domain = null, $locale = null);
+
+    /**
+     * Translates the given choice message by choosing a translation according to a number.
+     *
+     * @param string      $id         The message id (may also be an object that can be cast to string)
+     * @param int         $number     The number to use to find the indice of the message
+     * @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 $locale     The locale or null to use the default
+     *
+     * @throws \InvalidArgumentException If the locale contains invalid characters
+     *
+     * @return string The translated string
+     *
+     * @api
+     */
+    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null);
+
+    /**
+     * Sets the current locale.
+     *
+     * @param string $locale The locale
+     *
+     * @throws \InvalidArgumentException If the locale contains invalid characters
+     *
+     * @api
+     */
+    public function setLocale($locale);
+
+    /**
+     * Returns the current locale.
+     *
+     * @return string The locale
+     *
+     * @api
+     */
+    public function getLocale();
+}