public String getCustomEndpointCertificateArn() {
        return this.customEndpointCertificateArn;
    }
<p>
Specify ACM certificate ARN for your custom endpoint.
</p>

@return Specify ACM certificate ARN for your custom endpoint.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/DomainEndpointOptions.java