code: public void setHostReservationIdSet(java.util.Collection<String> hostReservationIdSet) {
          if (hostReservationIdSet == null) {
              this.hostReservationIdSet = null;
              return;
          }
  
          this.hostReservationIdSet = new com.amazonaws.internal.SdkInternalList<String>(hostReservationIdSet);
      }
docs: <p>
  The host reservation IDs.
  </p>
  
  @param hostReservationIdSet
  The host reservation IDs.