public Policy withPolicyArn(String policyArn) {
        setPolicyArn(policyArn);
        return this;
    }
<p>
The policy ARN.
</p>

@param policyArn
       The policy ARN.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/Policy.java