public void setDomainArn(String domainArn) {
        this.domainArn = domainArn;
    }
<p>
The Amazon Resource Name (ARN) of the domain associated with the endpoint.
</p>

@param domainArn
       The Amazon Resource Name (ARN) of the domain associated with the endpoint.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/VpcEndpoint.java