I was hoping to take my bike to #drupaldevdays in Leuven. Regrettably my trusty ticket shop around the corner no longer sells international bike reservations. Tried to do it myself, but tbh I'm not going to pay 70€ to take a bike in the train from .ch to .be and back (my own ticket not included yet).
Where can I make reservations and buy international bike tickets for a reasonable amount?

I often had to grep through *.services.yml to figure out whether a certain service uses periods or underscore in its id. I simply cannot remember if its config.factory or config_factory. I just realized there is a better way to reference services thanks to autowire aliases! I just use '@\Drupal\Core\Config\ConfigFactoryInterface'. And in PHP code (e.g. classes implementing ContainerInjectionInterface) I'm now using ConfigFactoryInterface::class instead of the string literal.