code: public void consumeAsync(List<Purchase> purchases, OnConsumeMultiFinishedListener listener) {
          checkNotDisposed();
          checkSetupDone("consume");
          consumeAsyncInternal(purchases, null, listener);
      }
docs: Same as {@link consumeAsync}, but for multiple items at once.
  @param purchases The list of PurchaseInfo objects representing the purchases to consume.
  @param listener The listener to notify when the consumption operation finishes.