static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.White;
            empApp = new EmployeeApp();
            empApp.CallRestApi();
            do
            {
                try
                {
                    Console.TreatControlCAsInput = true;    // Prevent example from ending if CTL+C is pressed.
                    empApp.PrintMenu();
                    _ckiUser = Console.ReadKey(true);
                    _appComandUser = Utils.IsValidCommand(_ckiUser.Key.ToString());

                    switch (_appComandUser)
                    {
                        case Utils.AppCommand.InvalidInput:
                            empApp.ErrorOp();
                            break;

                        case Utils.AppCommand.SearchEmployee:
                            SearchOptions();
                            break;
                    }
                }
                catch
                {
                    empApp.ErrorOp();
                }

            } while (!Utils.IsEndCommand(_ckiUser.Key.ToString()));
        }