getDomainNameList() {
        let domainList = [];
        for (let domain in StatusPage.domainMappingList) {
            let s = StatusPage.domainMappingList[domain];

            if (this.slug === s) {
                domainList.push(domain);
            }
        }
        return domainList;
    }
Get list of domain names
@returns {object[]} List of status page domains