public async Task <IEnumerable <Contact> > GetContacts()
        {
            IEnumerable <Contact> lstContacts = await _repository.GetItemsAsync <Contact>();

            return(lstContacts);
        }
        public async Task <IEnumerable <Product> > GetProducts()
        {
            IEnumerable <Product> lstProducts = await _repository.GetItemsAsync <Product>();

            return(lstProducts);
        }