question: private void requestCoffeeList ( ) { List < String > inventory = new ArrayList < String > ( 4 ) ; inventory . add ( SupportUtils . SKU_ESPRESSO ) ; inventory . add ( SupportUtils . SKU_CAPPUCCINO ) ; inventory . add ( SupportUtils . SKU_ICED_COFFEE ) ; inventory . add ( SupportUtils . SKU_EARL_GREY ) ; mIabHelper . queryInventoryAsync ( true , inventory , mQueryInventoryListener ) ; }
target:  request asynchronously the coffee list