system_entity_type_build(array &$entity_types) Implements
system_block_view_system_main_block_alter(array &$build, BlockPluginInterface $block) Implements
Disabled option on forms and settings File core/modules/system/
system_authorized_batch_processing_url(array $options = array()) Returns the URL for the authorize.php script
system_preprocess_block(&$variables) Implements
system_sort_modules_by_info_name($a, $b) Array sorting callback; sorts modules by their name.
system_updater_info() Implements
system_authorized_init($callback, $file, $arguments = array(), $page_title = NULL) Setup a given callback to
system_check_directory($form_element, FormStateInterface $form_state) Checks the existence of the directory
system_theme() Implements
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