* Implement URLHandlerInfoProviderInterface in BuerklinProvider
Added URL handling capabilities to BuerklinProvider.
* Refactor ID extraction logic in BuerklinProvider
* Add tests for BuerklinProvider URLHandlerInfoProviderInterface
* Revert "Refactor ID extraction logic in BuerklinProvider"
This reverts commit 5f65176636.
* Exclude 'p' from valid ID return in BuerklinProvider