code: function(messageDelegate) {
      return function(event) {
        if (event.candidate) {
          messageDelegate(OT.Raptor.Actions.CANDIDATE, {
            candidate: event.candidate.candidate,
            sdpMid: event.candidate.sdpMid || '',
            sdpMLineIndex: event.candidate.sdpMLineIndex || 0
          });
        } else {
          OT.debug('IceCandidateForwarder: No more ICE candidates.');
        }
      };
    }
docs: Helper function to forward Ice Candidates via +messageDelegate+