EmailNotification: inject singleton services as DI
[] $config = RequestContext::getMain()->getConfig()
[] JobQueueGroup::singleton()->lazyPush()
[] UserOptionsLookup should be injected https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#272
[] A LoggerInstance should be injected https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#314
[] Should inject an ITextFormatter too https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#361
Injecting global variables
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#226
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#141
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#307
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#346
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#463
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#480
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/597404/1/includes/mail/EmailNotification.php#497