AncillaryEvent Field Type Repeated Description message oneOf ⮑node_id MediaNodeId ⮑outbound_context Context ⮑subscription_response SubscriptionResponse ⮑scte35_event Scte35Event ⮑smpte2038_message Smpte2038Message ⮑inbound_context Context ⮑metadata MetadataMessage Argument of Method Description CreateTransformAncillary Observe, modify or inject ancillary data such as SCTE-35 AncillaryConfiguration AncillaryMessage