ProductDataResponse
is
available for a request initiated by
PurchasingService.getProductData(java.util.Set)
.PurchaseResponse
is
available for a purchase initiated by
PurchasingService.purchase(String)
.PurchaseUpdatesResponse
is
available for a request initiated by
PurchasingService.getPurchaseUpdates(boolean)
.UserDataResponse
is
available for a request initiated by
PurchasingService.getUserData()
.