public void setDomainNameConfig(DomainNameConfig domainNameConfig) {
        this.domainNameConfig = domainNameConfig;
    }
<p>
The configuration for the <code>DomainName</code>.
</p>

@param domainNameConfig
       The configuration for the <code>DomainName</code>.
aws-java-sdk-appsync/src/main/java/com/amazonaws/services/appsync/model/UpdateDomainNameResult.java