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diff --git a/wsrep-lib/wsrep-API/v26/examples/node/stats.h b/wsrep-lib/wsrep-API/v26/examples/node/stats.h
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+++ b/wsrep-lib/wsrep-API/v26/examples/node/stats.h
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+/* Copyright (c) 2019, Codership Oy. All rights reserved.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/**
+ * @file This unit defines performance statistics loop
+ */
+
+#ifndef NODE_STATS_H
+#define NODE_STATS_H
+
+#include "ctx.h"
+
+/**
+ * Prints out statistics with a given period.
+ *
+ * @param[in] node   node context
+ * @param[in] period in seconds
+ */
+extern void
+node_stats_loop(const struct node_ctx* node, int period);
+
+#endif /* NODE_STATS_H */