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

vendor/symfony/console/Tests/Fixtures/DescriptorApplication2.php

@@ -0,0 +1,24 @@
+<?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\Console\Tests\Fixtures;
+
+use Symfony\Component\Console\Application;
+
+class DescriptorApplication2 extends Application
+{
+    public function __construct()
+    {
+        parent::__construct('My Symfony application', 'v1.0');
+        $this->add(new DescriptorCommand1());
+        $this->add(new DescriptorCommand2());
+    }
+}