direction property
Direction is which way work flows: "both", "pull" (target ← source), "push" (source → target), or "off" — which keeps the link declared and moves nothing.
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? direction;