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; } /** * Returns a single registered sitemap provider. * * @since 5.5.0 * * @param string $name Sitemap provider name. * @return WP_Sitemaps_Provider|null Sitemap provider if it exists, null otherwise. */ public function get_provider( $name ) { if ( ! is_string( $name ) || ! isset( $this->providers[ $name ] ) ) { return null; } return $this->providers[ $name ]; } /** * Returns all registered sitemap providers. * * @since 5.5.0 * * @return WP_Sitemaps_Provider[] Array of sitemap providers. */ public function get_providers() { return $this->providers; } }