public void Initialize()
 {
     _client = new QuickBooksClient(string.Empty, "Inventory Adjustment v1.0.0", "US");
     Assert.IsNotNull(_client);
 }
        private bool _disposedValue = false; // To detect redundant calls

        public InventoryManager(IQuickBooksClient client)
        {
            this._qbClient = client;
            this._log = LogManager.GetLogger(typeof(InventoryManager));
        }