diff --git a/src/packages/collaboration/lib/session.coffee b/src/packages/collaboration/lib/session.coffee
index 8448a7339..348172ff6 100644
--- a/src/packages/collaboration/lib/session.coffee
+++ b/src/packages/collaboration/lib/session.coffee
@@ -134,6 +134,7 @@ class Session
   setParticipantStates: (participantStates) ->
     @participants = participantStates.map (state) -> new Participant(state)
 
+  # TODO: move this functionality into the Participant Object
   getClientIdToSiteIdMap: -> @doc.get('collaborationState.clientIdToSiteId')
 
   subscribe: (name) ->