Makes Nullability of findAll consistent. #4132
Open
+14
−13
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All findAll methods now require a non null except one, matching the current implementation and documentation in the method comments.
Changing it to non-null would have been a breaking change since the implemented interface defines the Specificaton as nullable.
Of course, since there is a null check in place any actual call with a null parameter would already fail, and therefore we might accept this breakage.
Of course again, changing the methods to a non-null argument is technically also a breaking change since they might have been overwritten.
Closes #4131