Metabox on CustomPostType

Hello,
how can we hook the method

 public function ao_metabox_add_box()
    {
        $screens = array(
            'post',
            'page',
            // add extra types e.g. product or ... ?
        );

        foreach ( $screens as $screen ) {
            add_meta_box(
                'ao_metabox',
                __( 'Autoptimize this page', 'autoptimize' ),
                array( $this, 'ao_metabox_content' ),
                $screen,
                'side'
            );
        }
    }

to display AO metabox on custom post type editing screen ?

Thank you