dmPolicy property
DMPolicy sets how direct messages are admitted: "pairing" (a person must be approved first), "allowlist" (only listed senders) or "open". Empty leaves it unchanged.
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? dmPolicy;