[DOCUMENTATION] Document All The Things!

src/DependencyInjection/Compiler/SchemaDefPass.php

@@ -1,5 +1,34 @@
 <?php
 
+/*
+ * This file is part of GNU social - https://www.gnu.org/software/social
+ *
+ * GNU social is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GNU social is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Compiler pass which triggers Symgony to tell Doctrine to
+ * use out `SchemaDef` metadata driver
+ *
+ * @package  GNUsocial
+ * @category DB
+ *
+ * @author    Hugo Sales <hugo@fc.up.pt>
+ * @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+
 namespace App\DependencyInjection\Compiler;
 
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;