Add OCSPreconditionFailedException

Signed-off-by: Louis Chemineau <louis@chmn.me>

lib/public/AppFramework/OCS/OCSPreconditionFailedException.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.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\AppFramework\OCS;
+
+use Exception;
+use OCP\AppFramework\Http;
+
+/**
+ * Class OCSPreconditionFailedException
+ *
+ * @since 28.0.0
+ */
+class OCSPreconditionFailedException extends OCSException {
+	/**
+	 * OCSPreconditionFailedException constructor.
+	 *
+	 * @param string $message
+	 * @param Exception|null $previous
+	 * @since 9.1.0
+	 */
+	public function __construct($message = '', Exception $previous = null) {
+		parent::__construct($message, Http::STATUS_PRECONDITION_FAILED, $previous);
+	}
+}