next property
Next is the id of the step to do next: the first available, unfinished step in authoring order. Empty when the journey is complete, and also empty when every remaining step is blocked by a dependency.
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? next;