Differences in documentation and code for `clasz` field

Looking at the source code for the mapping of the clasz field I see a different mapping then in the documentation. The source code:

enum class service_class : service_class_t {
  AIR = 0,
  ICE = 1,
  IC = 2,
  COACH = 3,
  N = 4,
  RE = 5,
  RB = 6,
  S = 7,
  U = 8,
  STR = 9,
  BUS = 10,
  SHIP = 11,
  OTHER = 12,
  NUM_CLASSES
};

the documentation

0: long distance high speed trains (e.g. TGV)
1: long distance inter city trains
2: long distance night trains
3: regional express trains
4: regional trains
5: metro trains
6: subway trains
7: trams
8: buses
9: other (flights, ferries, taxis, etc.)

Could you clarify what the correct mapping is?

motis-project / motis

Differences in documentation and code for `clasz` field #219