public void setGatewayARN(String gatewayARN) {
        this.gatewayARN = gatewayARN;
    }
<p>
The unique Amazon Resource Name (ARN) of the gateway that joined the domain.
</p>

@param gatewayARN
       The unique Amazon Resource Name (ARN) of the gateway that joined the domain.
aws-java-sdk-storagegateway/src/main/java/com/amazonaws/services/storagegateway/model/JoinDomainResult.java