public Map<HostResource, ClusterMembership> provision(HostSystem hostSystem,
                                                          ClusterSpec.Type clusterType,
                                                          ClusterSpec.Id clusterId,
                                                          ZoneEndpoint zoneEndpoint,
                                                          DeployLogger logger,
                                                          boolean stateful,
                                                          ClusterInfo info) {
        if (combinedId.isPresent())
            clusterType = ClusterSpec.Type.combined;
        ClusterSpec cluster = ClusterSpec.request(clusterType, clusterId)
                                         .vespaVersion(version)
                                         .exclusive(exclusive)
                                         .combinedId(combinedId.map(ClusterSpec.Id::from))
                                         .dockerImageRepository(dockerImageRepo)
                                         .loadBalancerSettings(zoneEndpoint)
                                         .stateful(stateful)
                                         .build();
        return hostSystem.allocateHosts(cluster, Capacity.from(min, max, groupSize, required, canFail, cloudAccount, info), logger);
    }
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