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diff --git a/includes/libs/iterators/NotRecursiveIterator.php b/includes/libs/iterators/NotRecursiveIterator.php
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+<?php
+/**
+ * Wraps a non-recursive iterator with methods to be recursive
+ * without children.
+ *
+ * Alternatively wraps a recursive iterator to prevent recursing deeper
+ * than the wrapped iterator.
+ *
+ * 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
+ * @ingroup Maintenance
+ */
+class NotRecursiveIterator extends IteratorDecorator implements RecursiveIterator {
+	public function hasChildren() {
+		return false;
+	}
+
+	public function getChildren() {
+		return null;
+	}
+}