@Override
 public void createItem(Item item) {
   _inventory.put(item.getItemId(), item);
 }
 public String getItemId() {
   return item.getItemId();
 }
 public InventoryServiceBean() {
   Item butter = new Item().setItemId("BUTTER").setName("Not Parkay").setQuantity(1000);
   _inventory.put(butter.getItemId(), butter);
 }