Handle missing return type in __wakeup()

kim.pepper → made their first commit to this issue’s fork.

This is an issue because \Drupal\Core\DependencyInjection\DependencySerializationTrait::__sleep() and __wakeup() do not have support types in 10.2.x/10.3.x but they have been added in 11.x.

As PHP supports covariance, we can ensure our class implements the return types by overriding these methods and we can remove them when 10.x versions are no longer supported.

https://www.php.net/manual/en/language.oop5.variance.php

Adding return types should be done on the implementing classes first.

Committed to 3.x and 2.x. Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.