Cat{
    int id;
    string Name;
}

int[] GetList(){}
Cat   SendCat(int id){}

Wrapper{
    int[]   GetList()
    {
        try{
            return WebService.GetList();
        }
        catch{ //work work
        }
    }

    Cat     SendCat(int id)
    {
        try{
            return WebService.SendCat();
        }
        catch{ //work work
        }
    }
}