code: public Broadcast getBroadcast(String broadcastId) throws OpenTokException {
          if(StringUtils.isEmpty(broadcastId)) {
              throw new InvalidArgumentException("Broadcast id is null or empty");
          }
          String stream = this.client.getBroadcast(broadcastId);
          try {
              return broadcastReader.readValue(stream);
          } catch (Exception e) {
              throw new RequestException("Exception mapping json: " + e.getMessage());
          }
      }
docs: Gets an {@link Broadcast} object for the given broadcast ID.
  
  @param broadcastId The broadcast ID.
  @return The {@link Broadcast} object.