public UpdateRdsDbInstanceRequest withRdsDbInstanceArn(String rdsDbInstanceArn) {
        setRdsDbInstanceArn(rdsDbInstanceArn);
        return this;
    }
<p>
The Amazon RDS instance's ARN.
</p>

@param rdsDbInstanceArn
       The Amazon RDS instance's ARN.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-opsworks/src/main/java/com/amazonaws/services/opsworks/model/UpdateRdsDbInstanceRequest.java