public static UserService CrearInstanciaMySQL(MySqlConexion mysql)
        {
            UserService log = new UserService {
                mysql = mysql,
                type  = ConnectionType.MYSQL
            };

            return(log);
        }
        public static ShoppingCartService CrearInstanciaMySQL(MySqlConexion mysql)
        {
            ShoppingCartService log = new ShoppingCartService {
                mysql = mysql,
                type  = ConnectionType.MYSQL
            };

            return(log);
        }