Description
I am developing a new phpstan extension for ReflectionHelper::getPrivateMethodInvoker() to give a precise Closure return type instead of just Closure(mixed...): mixed) return. To achieve this, I created a DynamicStaticMethodReturnTypeExtension since the method is static.

Now, the extension is working well pre-testing. The only setback I faced is that here in the repo we use the dynamic call instead of static call. This makes the extension useless as PHPStan does not call it anymore since the call is, well, dynamic. To fix this, I might just need to replicate the extension in a DynamicMethodReturnTypeExtension to handle dynamic calls, but that is not very DRY. So, I just opted to fix the calls here to static, as they should have been.

P.S. The amount of characters typed decreased by 1: $this-> to self:: 😂

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide