public void setIdempotencyToken(String idempotencyToken) {
        this.idempotencyToken = idempotencyToken;
    }
<p>
A token ensuring that the operation is called only once with the specified details.
</p>

@param idempotencyToken
       A token ensuring that the operation is called only once with the specified details.
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/CreateContactChannelRequest.java