src: Adding retry in case of prefix registration fails

Change-Id: Ia124ab393c665b29f03216903128de98bd68de9d
diff --git a/src/adjacency-list.hpp b/src/adjacency-list.hpp
index 38debed..320dc40 100644
--- a/src/adjacency-list.hpp
+++ b/src/adjacency-list.hpp
@@ -104,6 +104,9 @@
   Adjacent*
   findAdjacent(uint64_t faceId);
 
+  uint64_t
+  getFaceId(const std::string& faceUri);
+
   void
   writeLog();