code: @SuppressWarnings({"WeakerAccess"})
      public static void createNotification(final Context context, final Bundle extras) {
          createNotification(context, extras, Constants.EMPTY_NOTIFICATION_ID);
      }
docs: Launches an asynchronous task to download the notification icon from CleverTap,
  and create the Android notification.
  <p/>
  Use this method when implementing your own FCM/GCM handling mechanism. Refer to the
  SDK documentation for usage scenarios and examples.
  
  @param context A reference to an Android context
  @param extras  The {@link Bundle} object received by the broadcast receiver