public PutContactPolicyRequest withContactArn(String contactArn) {
        setContactArn(contactArn);
        return this;
    }
<p>
The Amazon Resource Name (ARN) of the contact or escalation plan.
</p>

@param contactArn
       The Amazon Resource Name (ARN) of the contact or escalation plan.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/PutContactPolicyRequest.java