Symfony version(s) affected: 5.0.7

Description

Various classes in symfony/workflow are decleared final, preventing extension. For example I cannot extend Symfony\Component\Workflow\MarkingStore\MethodMarkingStore to account for 0 values which are valid in my case.

How to reproduce

Try extending Symfony\Component\Workflow\MarkingStore\MethodMarkingStore

Possible Solution

Remove final declaration from class.

Additional context