StoredStream
data class StoredStream(val streamId: StreamId, val streamArn: ARN, val streamVersion: Int, val files: List<StreamFile>, val roleArn: ARN, val description: String?, val createdAt: Timestamp, val lastUpdatedAt: Timestamp)(source)
The stream record FakeIot keeps, keyed by streamId. A stream's bytes are not modelled: the fake records where they were said to be, since devices fetch them over MQTT rather than from this API.