public ClusterCapacity withCount(int count) {
        return new ClusterCapacity(count, vcpuOrNull(), memoryGbOrNull(), diskGbOrNull(), bandwidthGbpsOrNull(),
                                   diskSpeed, storageType, architecture, clusterType);
    }
Returns a new ClusterCapacity equal to {@code this}, but with the given count.
flags/src/main/java/com/yahoo/vespa/flags/custom/ClusterCapacity.java