public void Run(ref Model model)
{
// TODO: strip layers not useful to compute output
// Strip unused layers
var unusedLayers = new HashSet <string>(ModelAnalyzer.FindUnusedLayers(model));
model.layers = model.layers.Where(l => !unusedLayers.Contains(l.name) || l.flags.HasFlag(Layer.Flags.Preserve)).ToList();
}