public static void sendBroadcastSync(Object instance, Intent intent) {
        ((PluginLocalBroadcastManager) instance).sendBroadcastSync(intent);
    }
Like {@link #sendBroadcast(Intent)}, but if there are any receivers for
the Intent this function will block and immediately dispatch them before
returning.
replugin-plugin-library/replugin-plugin-lib/src/main/java/com/qihoo360/replugin/loader/b/PluginLocalBroadcastManager.java