Manages the list of available themes. Hierarchy interface \Drupal\Core\Extension\

public ModuleHandlerInterface::invokeAll($hook, array

The file cache object. Type:

Contains the features enabled for themes by default. Type:

public ModuleHandlerInterface::getModuleList()

A list of module include file keys. Type:

public ModuleHandlerInterface::getImplementation

public ModuleHandlerInterface::addProfile($name,

hook_updater_info() Provide information on Updaters (classes that can update Drupal).

hook_system_info_alter(array &$info, \Drupal\Core\Extension\Extension $file, $type) Alter the information