public void setContactChannelArn(String contactChannelArn) {
        this.contactChannelArn = contactChannelArn;
    }
<p>
The Amazon Resource Name (ARN) of the contact channel Incident Manager engaged.
</p>

@param contactChannelArn
       The Amazon Resource Name (ARN) of the contact channel Incident Manager engaged.
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/Receipt.java