public void setEngineType(String engineType) {
        this.engineType = engineType;
    }
<p>
Optional parameter to filter the output by domain engine type. Acceptable values are 'Elasticsearch' and
'OpenSearch'.
</p>

@param engineType
       Optional parameter to filter the output by domain engine type. Acceptable values are 'Elasticsearch' and
       'OpenSearch'.
@see EngineType
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/ListDomainNamesRequest.java