void QValueSpaceManager::install(QAbstractValueSpaceLayer * layer)
{
    Q_ASSERT(Uninit == type);
    Q_ASSERT(layer);
    unsigned int cOrder = layer->order();
    int inserted = -1;
    for(int ii = 0; !inserted && ii < layers.count(); ++ii) {
        unsigned int lOrder = layers.at(ii)->order();
        Q_ASSERT(layer != layers.at(ii));
        if(lOrder < cOrder) {
            // Do nothing
        } else if(lOrder == cOrder) {
            if(layers.at(ii)->id() > layer->id()) {
                layers.insert(ii, layer);
                inserted = ii;
            }
        } else if(lOrder > cOrder) {
            layers.insert(ii, layer);
            inserted = ii;
        }
    }

    if(-1 == inserted) {
        inserted = layers.count();
        layers.append(layer);
    }
}