I use it but you have misunderstood what it does. It builds a model in memory and then you can use that to do other tasks at build time. It doesn't persist the

I use it but you have misunderstood what it does. It builds a model in memory and then you can use that to do other tasks at build time. It doesn't persist the model in a form that the app itself can use to start up faster. See here: https://github.com/remkop/picocli/issues/539 https://github.com/remkop/picocli/issues/539 Although looking over that issue, it looks like maybe reflection was never proven to be the source of the slowdowns.