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diff --git a/lib/public/Files/Notify/IChange.php b/lib/public/Files/Notify/IChange.php
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+<?php
+/**
+ * @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
+ *
+ * @author Robin Appelman <robin@icewind.nl>
+ *
+ * @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\Notify;
+
+/**
+ * Represents a detected change in the storage
+ *
+ * @since 12.0.0
+ */
+interface IChange {
+	const ADDED = 1;
+	const REMOVED = 2;
+	const MODIFIED = 3;
+	const RENAMED = 4;
+
+	/**
+	 * Get the type of the change
+	 *
+	 * @return int IChange::ADDED, IChange::REMOVED, IChange::MODIFIED or IChange::RENAMED
+	 *
+	 * @since 12.0.0
+	 */
+	public function getType();
+
+	/**
+	 * Get the path of the file that was changed relative to the root of the storage
+	 *
+	 * Note, for rename changes this path is the old path for the file
+	 *
+	 * @return mixed
+	 *
+	 * @since 12.0.0
+	 */
+	public function getPath();
+}