[SEBA-836] BBSim Reflector

Change-Id: Ib4ae5a2c24880dc62209bebb81188eca5f57865d
diff --git a/internal/bbsim/devices/helpers.go b/internal/bbsim/devices/helpers.go
index 5a56825..a00931d 100644
--- a/internal/bbsim/devices/helpers.go
+++ b/internal/bbsim/devices/helpers.go
@@ -39,6 +39,7 @@
 	)
 }
 
+// deprecated
 func onuSnToString(sn *openolt.SerialNumber) string {
 	s := string(sn.VendorId)
 	for _, i := range sn.VendorSpecific {