Optional
External ids of the record streams this view targets. Only present on record views (usedFor: 'record'), and required when creating one. Must contain exactly one stream external id in v1; multi-stream record views are reserved for future use.
usedFor: 'record'
External ids of the record streams this view targets. Only present on record views (
usedFor: 'record'), and required when creating one. Must contain exactly one stream external id in v1; multi-stream record views are reserved for future use.