WP_Upgrader::maintenance_mode()
Method: Toggle maintenance mode for the site.
Source: wp-admin/includes/class-wp-upgrader.php:973
WP_Upgrader::generic_strings()
Method: Add the generic strings to WP_Upgrader::$strings.
Source: wp-admin/includes/class-wp-upgrader.php:187
WP_Upgrader::create_lock()
Method: Creates a lock using WordPress options.
Source: wp-admin/includes/class-wp-upgrader.php:1000
WP_Upgrader::fs_connect()
Method: Connect to the filesystem.
Source: wp-admin/includes/class-wp-upgrader.php:233
WP_Upgrader::release_lock()
Method: Releases an upgrader lock.
Source: wp-admin/includes/class-wp-upgrader.php:1045
WP_Upgrader::download_package()
Method: Download a package.
Source: wp-admin/includes/class-wp-upgrader.php:304