code: @Override
  	protected Void doInBackground(Void... args) {
  		switch (type) {
  		case FACEBOOK:
  			FacebookUtils.unlink(context.get());
  			break;
  		case TWITTER:
  			TwitterUtils.unlink(context.get());
  			break;
  		}
  		return null;
  	}
docs: /* (non-Javadoc)
  @see android.os.AsyncTask#doInBackground(Params[])