private static function enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $filter_data ) {
self::$used_svg_filter_data[ $filter_id ] = $filter_data;
self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
}
/**
* Enqueue preset assets for the page.
*
* Includes a CSS custom property, SVG filter, and block CSS declaration.
*
* @internal
*
* @since 6.3.0
*
* @param string $filter_id The filter ID. e.g. 'wp-duotone-blue-orange'.
* @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
* @param string $filter_value The filter CSS value. e.g. 'url(#wp-duotone-blue-orange)' or 'unset'.
*/