diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index ff3b854975..c94837ed15 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -232,6 +232,7 @@ return array(
     'OCP\\Files\\Storage\\IStorage' => $baseDir . '/lib/public/Files/Storage/IStorage.php',
     'OCP\\Files\\Storage\\IStorageFactory' => $baseDir . '/lib/public/Files/Storage/IStorageFactory.php',
     'OCP\\Files\\UnseekableException' => $baseDir . '/lib/public/Files/UnseekableException.php',
+    'OCP\\Files_FullTextSearch\\Model\\AFilesDocument' => $baseDir . '/lib/public/Files_FullTextSearch/Model/AFilesDocument.php',
     'OCP\\FullTextSearch\\Exceptions\\FullTextSearchAppNotAvailableException' => $baseDir . '/lib/public/FullTextSearch/Exceptions/FullTextSearchAppNotAvailableException.php',
     'OCP\\FullTextSearch\\IFullTextSearchManager' => $baseDir . '/lib/public/FullTextSearch/IFullTextSearchManager.php',
     'OCP\\FullTextSearch\\IFullTextSearchPlatform' => $baseDir . '/lib/public/FullTextSearch/IFullTextSearchPlatform.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 9da57062de..80aabae238 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -262,6 +262,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OCP\\Files\\Storage\\IStorage' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IStorage.php',
         'OCP\\Files\\Storage\\IStorageFactory' => __DIR__ . '/../../..' . '/lib/public/Files/Storage/IStorageFactory.php',
         'OCP\\Files\\UnseekableException' => __DIR__ . '/../../..' . '/lib/public/Files/UnseekableException.php',
+        'OCP\\Files_FullTextSearch\\Model\\AFilesDocument' => __DIR__ . '/../../..' . '/lib/public/Files_FullTextSearch/Model/AFilesDocument.php',
         'OCP\\FullTextSearch\\Exceptions\\FullTextSearchAppNotAvailableException' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Exceptions/FullTextSearchAppNotAvailableException.php',
         'OCP\\FullTextSearch\\IFullTextSearchManager' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/IFullTextSearchManager.php',
         'OCP\\FullTextSearch\\IFullTextSearchPlatform' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/IFullTextSearchPlatform.php',
diff --git a/lib/public/Files_FullTextSearch/Model/AFilesDocument.php b/lib/public/Files_FullTextSearch/Model/AFilesDocument.php
new file mode 100644
index 0000000000..3eed956df8
--- /dev/null
+++ b/lib/public/Files_FullTextSearch/Model/AFilesDocument.php
@@ -0,0 +1,112 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Files_FullTextSearch - Index the content of your files
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCP\Files_FullTextSearch\Model;
+
+
+use OCP\FullTextSearch\Model\IndexDocument;
+
+
+/**
+ * Abstract Class AFilesDocument
+ *
+ * This is mostly used by 3rd party apps that want to complete the IndexDocument
+ * with more information about a file before its index:
+ *
+ *    \OC::$server->getEventDispatcher()->addListener(
+ *        '\OCA\Files_FullTextSearch::onFileIndexing',
+ *        function(GenericEvent $e) {
+ *            //@var \OCP\Files\Node $file
+ *            $file = $e->getArgument('file');
+ *
+ *            // @var \OCP\Files_FullTextSearch\Model\AFilesDocument $document
+ *            $document = $e->getArgument('document');
+ *
+ *        }
+ *    );
+ *
+ * @since 15.0.0
+ *
+ * @package OCP\Files_FullTextSearch\Model
+ */
+abstract class AFilesDocument extends IndexDocument {
+
+
+	/**
+	 * Returns the owner of the document/file.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	abstract public function getOwnerId(): string;
+
+
+	/**
+	 * Returns the current viewer of the document/file.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	abstract public function getViewerId(): string;
+
+
+	/**
+	 * Returns the type of the document/file.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string \OCP\Files\FileInfo::TYPE_FILE|\OCP\Files\FileInfo::TYPE_FOLDER
+	 */
+	abstract public function getType(): string;
+
+
+	/**
+	 * Returns the mimetype of the document/file.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	abstract public function getMimetype(): string;
+
+	/**
+	 * Returns the path of the document/file.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	abstract public function getPath(): string;
+
+
+}
+