ChatMarkerMessage constructor
      
      ChatMarkerMessage({ 
    
    
- required String id,
- required MessageType type,
- required String referenceId,
- String? fromId,
- String? fromName,
- String? roomName,
- required ChatMarker status,
- int? sendTime,
Implementation
ChatMarkerMessage(
    {required String id,
    required MessageType type,
    required this.referenceId,
    String? fromId,
    String? fromName,
    this.roomName,
    required this.status,
    int? sendTime})
    : super(
          id: id,
          type: type,
          fromName: fromName,
          fromId: fromId,
          sendTime: sendTime);