public void setDeferActivation(Boolean deferActivation) {
        this.deferActivation = deferActivation;
    }
<p>
If you want to activate the channel at a later time, you can choose to defer activation. Incident Manager can't
engage your contact channel until it has been activated.
</p>

@param deferActivation
       If you want to activate the channel at a later time, you can choose to defer activation. Incident Manager
       can't engage your contact channel until it has been activated.
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/CreateContactChannelRequest.java