@Override
public List<Server> doRequest(NovaApi api) {
List<Server> response = Lists.newArrayList();
ServerApi serverApi = api.getServerApiForZone(getAccount().getRegion());
FluentIterable<? extends Server> servers = serverApi.listInDetail()
.concat();
response.addAll(newArrayList(filter(servers,
withTag(this.tag, this.tagValue))));
return response;
}