@Override
    public String toString() {
        if (isConfigured())
            return "flavor '" + name + "'" + flavorOverrides.map(o -> " with overrides: " + o).orElse("");
        else
            return name;
    }
True if this is a configured flavor used for hosts,
false if it is a virtual flavor created on the fly from node resources
config-provisioning/src/main/java/com/yahoo/config/provision/Flavor.java