sender property
Sender is the TRANSPORT-NATIVE user id of whoever wrote the message — a Discord member.user.id, a Slack U… user id, a Teams aadObjectId (falling back to from.id), a Telegram from.id in decimal. Stable per person per transport, and the identity the gate keys on: an allow entry, an access-group member and a pairing approval all name exactly this value.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? sender;