system_theme_suggestions_html(array $variables) Implements
system_get_module_admin_tasks($module, array $info) Generate a list of tasks offered by a specified module
New users will be set to the default time zone at registration. File core/modules/system/
system_js_settings_alter(&$settings, AttachedAssetsInterface $assets) Implements
system_mail($key, &$message, $params) Implements
system_default_region($theme) Gets the name of the default region for a given theme.
system_region_list($theme, $show = REGIONS_ALL) Get a list of available regions from a specified theme.
system_query_entity_reference_alter(AlterableInterface $query) Implements
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