WP_Sitemaps_Renderer::get_sitemap_index_stylesheet_url()
Gets the URL for the sitemap index stylesheet.
Return
(string) The sitemap index stylesheet URL.
Source
File: wp-includes/sitemaps/class-wp-sitemaps-renderer.php
public function get_sitemap_index_stylesheet_url() {
		global $wp_rewrite;
		$sitemap_url = home_url( '/wp-sitemap-index.xsl' );
		if ( ! $wp_rewrite->using_permalinks() ) {
			$sitemap_url = home_url( '/?sitemap-stylesheet=index' );
		}
		/**
		 * Filters the URL for the sitemap index stylesheet.
		 *
		 * If a falsey value is returned, no stylesheet will be used and
		 * the "raw" XML of the sitemap index will be displayed.
		 *
		 * @since 5.5.0
		 *
		 * @param string $sitemap_url Full URL for the sitemaps index XSL file.
		 */
		return apply_filters( 'wp_sitemaps_stylesheet_index_url', $sitemap_url );
	}  Changelog
| Version | Description | 
|---|---|
| 5.5.0 | Introduced. | 
    © 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/get_sitemap_index_stylesheet_url