public void setDomainCount(Integer domainCount) {
        this.domainCount = domainCount;
    }
<p>
The number of domain names that are specified in the domain list.
</p>

@param domainCount
       The number of domain names that are specified in the domain list.
aws-java-sdk-route53resolver/src/main/java/com/amazonaws/services/route53resolver/model/FirewallDomainList.java