public void setReservationName(String reservationName) {
        this.reservationName = reservationName;
    }
<p>
The customer-specified identifier to track this reservation.
</p>

@param reservationName
       The customer-specified identifier to track this reservation.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/ReservedInstance.java