public void setHostReservationIdSet(java.util.Collection<String> hostReservationIdSet) {
        if (hostReservationIdSet == null) {
            this.hostReservationIdSet = null;
            return;
        }

        this.hostReservationIdSet = new com.amazonaws.internal.SdkInternalList<String>(hostReservationIdSet);
    }
<p>
The host reservation IDs.
</p>

@param hostReservationIdSet
       The host reservation IDs.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/DescribeHostReservationsRequest.java