DetailsType returns the type for a payload detail.

WrapPayloadDetails wraps a Details object in the protobuf wrapper struct necessary to make it usable as the Details field of a Payload.

WrapProgressDetails wraps a ProgressDetails object in the protobuf wrapper struct necessary to make it usable as the Details field of a Progress.

CreateStatsDetails are used for the CreateStats job, which is triggered whenever the `CREATE STATISTICS` SQL statement is run.

Details is a marker interface for job details proto structs.

ProgressDetails is a marker interface for job progress details proto structs.

ChangefeedTargets is a set of id targets with metadata.