Validator and OpenActive.Net disagree on allowable values of "kind"

[matdavies]

OpenActive.Net serialises the "kind" field for slots as "Slot":

https://github.com/openactive/OpenActive.NET/blob/b171a1c76184b6d69118483bd998dab3eea29907/OpenActive.NET/rpde/RDPEModels.cs#L47

https://github.com/openactive/OpenActive.NET/blob/b171a1c76184b6d69118483bd998dab3eea29907/OpenActive.NET/rpde/RDPEModels.cs#L338

(Though I must admit, I can't seem to find where this property is actually set?)

However, the validator does not accept this type:

Given this array of items, this is the result;

[nickevansuk]

Ah in OA.NET it should be FacilityUseSlot instead of Slot that's used

[matdavies]

Ah, ok. Why is slot even in there BTW? If that "kind" is not a valid kind, why is it in the enum at all?