@Override
        public String toString() {
            return "request for " + count + " nodes" +
                   ( groups > 1 ? " (in " + groups + " groups)" : "") +
                   " with " + requestedNodeResources; }
A node spec specifying a node count and a flavor
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/provisioning/NodeSpec.java