public Load map(DoubleUnaryOperator f) {
        return new Load(f.applyAsDouble(cpu),
                        f.applyAsDouble(memory),
                        f.applyAsDouble(disk),
                        f.applyAsDouble(gpu),
                        f.applyAsDouble(gpuMemory));
    }
Returns the load where the given function is applied to each dimension of this.
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/autoscale/Load.java