public void setRdsDbInstanceArn(String rdsDbInstanceArn) {
        this.rdsDbInstanceArn = rdsDbInstanceArn;
    }
<p>
The instance's ARN.
</p>

@param rdsDbInstanceArn
       The instance's ARN.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/RdsDbInstance.java