public void setPolicyArn(String policyArn) {
        this.policyArn = policyArn;
    }
<p>
The Amazon Resource Name (ARN) of the IAM policy for which you want the versions.
</p>
<p>
For more information about ARNs, see <a
href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html">Amazon Resource Names
(ARNs)</a> in the <i>Amazon Web Services General Reference</i>.
</p>

@param policyArn
       The Amazon Resource Name (ARN) of the IAM policy for which you want the versions.</p>
       <p>
       For more information about ARNs, see <a
       href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html">Amazon Resource Names
       (ARNs)</a> in the <i>Amazon Web Services General Reference</i>.
aws-java-sdk-iam/src/main/java/com/amazonaws/services/identitymanagement/model/ListEntitiesForPolicyRequest.java