do_feed example

do_action( 'do_robots' );
    return;
} elseif ( is_favicon() ) {
    /** * Fired when the template loader determines a favicon.ico request. * * @since 5.4.0 */
    do_action( 'do_favicon' );
    return;
} elseif ( is_feed() ) {
    do_feed();
    return;
} elseif ( is_trackback() ) {
    require ABSPATH . 'wp-trackback.php';
    return;
}

if ( wp_using_themes() ) {

    $tag_templates = array(
        'is_embed'             => 'get_embed_template',
        'is_404'               => 'get_404_template',