OnSeatListChanged typedef
        OnSeatListChanged =
     void Function(List<TUISeatInfo>  seatList, List<TUISeatInfo>  seatedList, List<TUISeatInfo>  leftList)
    
    
    
Implementation
typedef OnSeatListChanged = void Function(List<TUISeatInfo> seatList,
    List<TUISeatInfo> seatedList, List<TUISeatInfo> leftList);