code: @JsonProperty("broadcastUrls")
      private void unpack(Map<String,Object> broadcastUrls) {
          if (broadcastUrls == null) return;
          hls = (String)broadcastUrls.get("hls");
          ArrayList<Map<String,String>> rtmpResponse = (ArrayList<Map<String,String>>)broadcastUrls.get("rtmp");
          if (rtmpResponse == null || rtmpResponse.size() == 0) return;
          for ( Map<String,String> element : rtmpResponse) {
              Rtmp rtmp = new Rtmp();
              rtmp.setId(element.get("id"));
              rtmp.setServerUrl(element.get("serverUrl"));
              rtmp.setStreamName(element.get("streamName"));
              this.rtmpList.add(rtmp);
          }
      }
docs: Details on the HLS and RTMP broadcast streams. For an HLS stream, the URL is provided.
  See the <a href="https://tokbox.com/developer/guides/broadcast/live-streaming/">OpenTok
  live streaming broadcast developer guide</a> for more information on how to use this URL.
  For each RTMP stream, the RTMP server URL and stream name are provided, along with the RTMP
  stream's status.