code: public FutureAPIResponse deleteItemAsFuture(String iid, DateTime eventTime)
        throws IOException {
      return createEventAsFuture(new Event()
          .event("$delete")
          .entityType("item")
          .entityId(iid)
          .eventTime(eventTime));
    }
docs: Sends a delete item request.
  
  @param iid ID of the item
  @param eventTime timestamp of the event