webhook property
Webhook is a URL the carrier posts this call's events to as it progresses. Empty means the call's outcome is only visible by reading it back.
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? webhook;