--- /dev/null
+/*
+ * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#ifndef BACKWARD_COMPATIBILITY_GROUP_BY_H
+#define BACKWARD_COMPATIBILITY_GROUP_BY_H
+
+#include <time.h>
+
+char *backward_compat_group_by_session(const char *path,
+ const char *local_session_name,
+ time_t session_creation_time);
+
+#endif /* BACKWARD_COMPATIBILITY_GROUP_BY_H */