toJson method
Implementation
@visibleForTesting
Map<String, dynamic> toJson() => {
      "personIdsToAdd": _personIdsToAdd,
      "personIdsToRemove": _personIdsToRemove,
    }.clearNulls();@visibleForTesting
Map<String, dynamic> toJson() => {
      "personIdsToAdd": _personIdsToAdd,
      "personIdsToRemove": _personIdsToRemove,
    }.clearNulls();