--- /dev/null
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+interface MessageSpecifier {
+ /**
+ * Returns the message key
+ *
+ * If a list of multiple possible keys was supplied to the constructor, this method may
+ * return any of these keys. After the message has been fetched, this method will return
+ * the key that was actually used to fetch the message.
+ *
+ * @return string
+ */
+ public function getKey();
+
+ /**
+ * Returns the message parameters
+ *
+ * @return array
+ */
+ public function getParams();
+}