NativeD_TIMConvMarkConversation typedef
        NativeD_TIMConvMarkConversation =
     Int Function(Pointer<Uint8>  conversation_id_array, Int mark_type, Int enable_mark, Pointer<Uint8>  user_data)
    
    
    
Implementation
typedef NativeD_TIMConvMarkConversation = ffi.Int Function(ffi.Pointer<ffi.Uint8> conversation_id_array, ffi.Int mark_type, ffi.Int enable_mark, ffi.Pointer<ffi.Uint8> user_data);