code: public static synchronized void putChannel(WonderPushChannel channel) {
          try {
              if (_putChannel(channel)) {
                  save();
              }
          } catch (Exception ex) {
              Log.e(WonderPush.TAG, "Unexpected error while putting channel " + channel, ex);
          }
      }
docs: Create or update a channel.
  
  <p>Creates or updates a channel both in this class registry and in Android.</p>
  
  @param channel The channel to create or update.