public TIsBusyToken(ProductsAPIClient aOwner)
 {
     mOwner = aOwner;
     aOwner.IsBusy = true;
 }
 Point mProductListMouseDown; //Position to track where mouse down ocurred when clicking delete button of list items
 public MainWindow()
 {
     this.APIClient = new ProductsAPIClient();
     this.APIClient.PropertyChanged += _OnAPIClientPropertyChanged;
     InitializeComponent();
 }