code: @Override
      public void init(File jsonFile) throws SubscriberException {
          try {
              setConfig(new JsonSimpleConfig(jsonFile));
          } catch (IOException ioe) {
              throw new SubscriberException(ioe);
          }
      }
docs: Initializes the plugin using the specified JSON configuration
  
  @param jsonFile JSON configuration file
  @throws SubscriberException if there was an error in initialization