ref 40cedb84ff (diff-dba52cb217f89ed45931ded5618ce83294fc32cf4a8dec73aa605c65441331b3R43) ref 639be25f1d/ghost/core/core/server/api/endpoints/utils/serializers/output/config.js - This was moved under hostSettings very early on in development and should have been cleaned up - As this property wasn't listed in the output serializer, we know it's not being used anywhere - We can see from the limit code that it looks for hostSettings.billing.url
40cedb84ff (diff-dba52cb217f89ed45931ded5618ce83294fc32cf4a8dec73aa605c65441331b3R43)
639be25f1d/ghost/core/core/server/api/endpoints/utils/serializers/output/config.js