From PHPUnit 10, all data providers need to be static. This commit will
make migrating from version 9 to 10 a bit easier.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
Refactor `AbstractSearcher` class and its children. Also most of the
unnecessary logic that was on `AbstractSearcher` was put back into `In`
class.
This commit also updates all "SubdivisionCode" rules.
The script used to create the classes can be found on:
https://gist.github.com/henriquemoody/ec404f994a87b18c7771