Source
File: wp-includes/sitemaps/class-wp-sitemaps-registry.php
public function add_provider( $name, WP_Sitemaps_Provider $provider ) {
if ( isset( $this->providers[ $name ] ) ) {
return false;
}
/**
* Filters the sitemap provider before it is added.
*
* @since 5.5.0
*
* @param WP_Sitemaps_Provider $provider Instance of a WP_Sitemaps_Provider.
* @param string $name Name of the sitemap provider.
*/
$provider = apply_filters( 'wp_sitemaps_add_provider', $provider, $name );
if ( ! $provider instanceof WP_Sitemaps_Provider ) {
return false;
}
$this->providers[ $name ] = $provider;
return true;
}