DartD_TIMGroupCreate typedef
        DartD_TIMGroupCreate =
     int Function(Pointer<Uint8>  json_group_create_param, Pointer<Uint8>  user_data)
    
    
    
Implementation
typedef DartD_TIMGroupCreate = int Function(ffi.Pointer<ffi.Uint8> json_group_create_param, ffi.Pointer<ffi.Uint8> user_data);