wp-includes/sitemaps/class-wp-sitemaps-renderer.php:42WP_Sitemaps_Renderer constructor.
public function __construct() { $stylesheet_url = $this->get_sitemap_stylesheet_url(); if ( $stylesheet_url ) { $this->stylesheet = '<?xml-stylesheet type="text/xsl" href="' . esc_url( $stylesheet_url ) . '" ?>'; } $stylesheet_index_url = $this->get_sitemap_index_stylesheet_url(); if ( $stylesheet_index_url ) { $this->stylesheet_index = '<?xml-stylesheet type="text/xsl" href="' . esc_url( $stylesheet_index_url ) . '" ?>'; } }Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sitemaps/class-wp-sitemaps-renderer.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.