public Map<HostResource, ClusterMembership> provision(HostSystem hostSystem,
                                                          ClusterSpec.Type clusterType,
                                                          ClusterSpec.Id clusterId,
                                                          DeployLogger logger,
                                                          boolean stateful,
                                                          ClusterInfo clusterInfo) {
        return provision(hostSystem, clusterType, clusterId, ZoneEndpoint.defaultEndpoint, logger, stateful, clusterInfo);
    }
Returns whether the count attribute was present on the {@code <nodes>} element.
config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/NodesSpecification.java