public bool AddOrder(Order o)
        {
            FirebaseResponse response = firebaseClient.Get($"Orders/{o.Id}");

            if (response.Body == "null")
            {
                FirebaseResponse response1 = firebaseClient.Get($"Customers/{o.Customer_Id}");
                if (response1.Body == "null")
                {
                    Console.WriteLine("Customer does not exist");
                    return(false);
                }
                else
                {
                    SetResponse response2 = firebaseClient.Set($"Orders/{o.Id}", o);
                    DataOrd     result    = response1.ResultAs <DataOrd>();
                    Console.WriteLine($"Order inserted {o.Id}");
                    return(true);
                }
            }
            else
            {
                Console.WriteLine("Order ID already exist in data");
                return(false);
            }
        }
        public bool UpdateOrder(Order o)
        {
            Customer c = GetCustomerById(o.Customer_Id);

            if (c.Id != 0)
            {
                FirebaseResponse respone = firebaseClient.Update($"Order/{o.Id}", o);
                DataOrd          or      = respone.ResultAs <DataOrd>();
                return(true);
            }
            else
            {
                Console.WriteLine("Customer does not exist");
                return(false);
            }
        }