public void setArn(String arn) {
        this.arn = arn;
    }
<p>
The Amazon Resource Name (ARN) of the policy target.
</p>
<p>
For more information about ARNs in Organizations, see <a href=
"https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsorganizations.html#awsorganizations-resources-for-iam-policies"
>ARN Formats Supported by Organizations</a> in the <i>Amazon Web Services Service Authorization Reference</i>.
</p>

@param arn
       The Amazon Resource Name (ARN) of the policy target.</p>
       <p>
       For more information about ARNs in Organizations, see <a href=
       "https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsorganizations.html#awsorganizations-resources-for-iam-policies"
       >ARN Formats Supported by Organizations</a> in the <i>Amazon Web Services Service Authorization
       Reference</i>.
aws-java-sdk-organizations/src/main/java/com/amazonaws/services/organizations/model/PolicyTargetSummary.java