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Some slices are dependent on each other, as can be seen in this diagram:
- Accommodation is a specialization of reservation, i.e.
something like a reservation for the current week. For this reason,
the accommodation slice builds on the reservation slice, but it
does not extend it. The accommodation mixin extends theHotel.Base
class, but to this end, theHotel.Base
class must be extended
already by the reservation mixin. This dependency is different from
extension and explained in further detail in FIXME.
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