get_filter_url example

    private static function get_global_styles_presets( $sources ) {
        $css = 'body{';
        foreach ( $sources as $filter_id => $filter_data ) {
            $slug              = $filter_data['slug'];
            $colors            = $filter_data['colors'];
            $css_property_name = self::get_css_custom_property_name( $slug );
            $declaration_value = is_string( $colors ) ? $colors : self::get_filter_url( $filter_id );
            $css              .= "$css_property_name:$declaration_value;";
        }
        $css .= '}';
        return $css;
    }

    /** * Enqueue a block CSS declaration for the page. * * This does not include any SVGs. * * @internal * * @since 6.3.0 * * @param string $filter_id The filter ID. e.g. 'wp-duotone-000000-ffffff-2'. * @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-000000-ffffff-2)' or 'unset'. */