public String getDomainName() {
        return this.domainName;
    }
<p>
The name of an Elasticsearch domain. Domain names are unique across the domains owned by an account within an AWS
region. Domain names start with a letter or number and can contain the following characters: a-z (lowercase),
0-9, and - (hyphen).
</p>

@return The name of an Elasticsearch domain. Domain names are unique across the domains owned by an account
        within an AWS region. Domain names start with a letter or number and can contain the following
        characters: a-z (lowercase), 0-9, and - (hyphen).
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/ElasticsearchDomainStatus.java