ah hello my old friend, impossible-generics.neon

propagating generics all the way through the likes of HandlerList etc is more trouble than it's worth.

tests/plugins/TesterPlugin/src/AsyncEventInheritanceTest.php

@@ -39,6 +39,9 @@ final class AsyncEventInheritanceTest extends Test{
 		ChildAsyncEvent::class,
 		ParentAsyncEvent::class
 	];
+	/**
+	 * @var string[]
+	 */
 	private array $callOrder = [];
 
 	public function getName() : string{