public void setClientToken(String clientToken) {
        this.clientToken = clientToken;
    }
<p>
Unique, case-sensitive identifier to ensure idempotency of the request.
</p>

@param clientToken
       Unique, case-sensitive identifier to ensure idempotency of the request.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/CreateVpcEndpointRequest.java