public void setOutpostArn(String outpostArn) {
        this.outpostArn = outpostArn;
    }
<p>
The Amazon Resource Name (ARN) of the Amazon Web Services Outpost. Only applicable to Amazon Web Services
Outposts instances.
</p>

@param outpostArn
       The Amazon Resource Name (ARN) of the Amazon Web Services Outpost. Only applicable to Amazon Web Services
       Outposts instances.
aws-java-sdk-guardduty/src/main/java/com/amazonaws/services/guardduty/model/InstanceDetails.java