Emitted when attempting to extend a final class, a class annotated with @final or a class using @psalm-inheritors and not in the inheritor list
<?php
final class A {}
class B extends A {}
/**
* @final
*/
class DoctrineA {}
class DoctrineB extends DoctrineA {}
/**
* @psalm-inheritors A|B
*/
class C {}
class D extends C {}