Fix exemptions not possible to create on findings level (and activate for check 102)

[ConjuringCoffee]

Fixes #1183

It isn't simply enough to call method ENABLE_CHECKSUM in the constructor. SAP standard requires setting the attribute USES_CHECKSUM in the constructor for exemptions to work correctly.

For now, I've changed SET_USES_CHECKSUM from private to protected. Calling both methods in the constructor of the check works, but it is pretty ugly. I want to refactor how the methods are implemented.

[ConjuringCoffee]

The attribute USES_CHECKSUM used to be set in the constructor, but it was changed in #950.

[ConjuringCoffee]

@jrodriguez-rc, can you please review my changes? Your change in #950 moved setting USES_CHECKSUM out of the constructor which made it impossible to create exemptions on finding levels.

I didn't see the need for the attribute MV_USES_CHECKSUM. I've removed it and now only the standard attribute is used. The attribute is set in the constructor again.

[jrodriguez-rc]

@ConjuringCoffee I just tried in 2025 release and the change is working correctly

[ConjuringCoffee]

@jrodriguez-rc, thanks for the test. Do you see any problems with the new handling of the attribute USES_CHECKSUM? I'm asking because it reverts some of your changes,

[ConjuringCoffee]

Happy new year everyone. If @jrodriguez-rc doesn't have anything to add, then let's merge the pull request. 😉

[larshp]

yea, sounds good

[jrodriguez-rc]

Hi @ConjuringCoffee, sorry for the delay. I don't see any problem about that.

[ConjuringCoffee]

Thanks everyone