public function __construct() {
		$widget_ops = array(
			'classname'                   => $this->widget_cssclass,
			'description'                 => $this->widget_description,
			'customize_selective_refresh' => true,
		);

		parent::__construct( $this->widget_id, $this->widget_name, $widget_ops );

		add_action( 'save_post', array( $this, 'flush_widget_cache' ) );
		add_action( 'deleted_post', array( $this, 'flush_widget_cache' ) );
		add_action( 'switch_theme', array( $this, 'flush_widget_cache' ) );
	}