MasterChainHotelProvider
One (providerCode, providerHotelCode) entry under a shared baseCode.
source distinguishes direct members (the hotel's own provider_chain
carries the master_chain_id) from transitive ones (resolved through a
shared base_code).
providerCodestring
providerHotelCodestring
hotelNamestring
sourcestring
Possible values: [direct, transitive]
MasterChainHotelProvider
{
"providerCode": "string",
"providerHotelCode": "string",
"hotelName": "string",
"source": "direct"
}