This page redirects to an external site: https://developer.wordpress.org/reference/functions/do_feed_rss2/
Load either the RSS2 comment feed or the RSS2 posts feed.
<?php do_feed_rss2( $for_comments ) ?>
Since: 2.1.0
do_feed_rss2() is located in wp-includes/functions.php.