the rate limit between sending new recovery mode email links.   
[ WP_Recovery_Mode::get_link_ttl() ](https://developer.wordpress.org/reference/classes/wp_recovery_mode/get_link_ttl/) ` wp-includes/class-wp-recovery-mode.php ` |  Gets the number of seconds the recovery mode link is valid for.   
[ wp_is_jsonp_request() ](https://developer.wordpress.org/reference/functions/wp_is_jsonp_request/) ` wp-includes/load.php ` |  Checks whether current request is a JSONP request, or is expecting a JSONP response.   
[ is_protected_endpoint() ](https://developer.wordpress.org/reference/functions/is_protected_endpoint/) ` wp-includes/load.php ` |  Determines whether we are currently on an endpoint that should be protected against WSODs.   
[ is_protected_ajax_action() ](https://developer.wordpress.org/reference/functions/is_protected_ajax_action/) ` wp-includes/load.php ` |  Determines whether we are currently handling an Ajax action that should be protected against WSODs.   
[ get_feed_build_date() ](https://developer.wordpress.org/reference/functions/get_feed_build_date/) ` wp-includes/feed.php ` |  Gets the UTC time of the most recently modified post from [ WP_Query ](https://developer.wordpress.org/reference/classes/wp_query/) .   
[ WP_Recovery_Mode_Email_Service::send_recovery_mode_email() ](https://developer.wordpress.org/reference/classes/wp_recovery_mode_email_service/send_recovery_mode_email/) ` wp-includes/class-wp-recovery-mode-email-service.php ` |  Sends the Recovery Mode email to the site admin email address.   
[ WP_Recovery_Mode_Link_Service::get_recovery_mode_begin_url() ](https://developer.wordpress.org/reference/classes/wp_recovery_mode_link_service/get_recovery_mode_begin_url/) ` wp-includes/class-wp-recovery-mode-link-service.php ` |  Gets a URL to begin recovery mode.   
[ WP_Recovery_Mode_Cookie_Service::set_cookie() ](https://developer.wordpress.org/reference/classes/wp_recovery_mode_cookie_service/set_cookie/) ` wp-includes/class-wp-recovery-mode-cookie-service.php ` |  Sets the recovery mode cookie.   
[ WP_Recovery_Mode_Cookie_Service::validate_cookie() ](https://developer.wordpress.org/reference/classes/wp_recovery_mode_cookie_service/validate_cookie/) ` wp-includes/class-wp-recovery-mode-cookie-service.php ` |  Validates the recovery mode cookie.   
[ wp_is_fatal_error_handler_enabled() ](https://developer.wordpress.org/reference/functions/wp_is_fatal_error_handler_enabled/) ` wp-includes/error-protection.php ` |  Checks whether the fatal error handler is enabled.   
[ WP_Fatal_Error_Handler::display_default_error_template() ](https://developer.wordpress.org/reference/classes/wp_fatal_error_handler/display_default_error_template/) ` wp-includes/class-wp-fatal-error-handler.php ` |  Displays the default PHP error template.   
[ WP_Fatal_Error_Handler::should_handle_error() ](https://developer.wordpress.org/reference/classes/wp_fatal_error_handler/should_handle_error/) ` wp-includes/class-wp-fatal-error-handler.php ` |  Determines whether we are dealing with an error that WordPress should handle in order to protect the admin backend against WSODs.   
[ wp_filter_oembed_iframe_title_attribute() ](https://developer.wordpress.org/reference/functions/wp_filter_oembed_iframe_title_attribute/) ` wp-includes/embed.php ` |  Filters the given oEmbed HTML to make sure iframes have a title attribute.   
[ WP_Query::generate_postdata() ](https://developer.wordpress.org/reference/classes/wp_query/generate_postdata/) ` wp-includes/class-wp-query.php ` |  Generates post data.   
[ WP_Debug_Data::debug_data() ](https://developer.wordpress.org/reference/classes/wp_debug_data/debug_data/) ` wp-admin/includes/class-wp-debug-data.php ` |  Static function for generating site debug data when required.   
[ wp_trusted_keys() ](https://developer.wordpress.org/reference/functions/wp_trusted_keys/) ` wp-admin/includes/file.php ` |  Retrieves the list of signing keys trusted by WordPress.   
[ WP_Site_Health::get_test_rest_availability(