title: I need good model serialization. Default R serialization is nighter safe nor effective from the point of model size
body: <p>MLR3 model includes a lot of redundant data not needed when applying the model. The traditional R approach is to save all the data used for model training. It leads to the growth of used memory. What leads to the growth of used memory. In the traditional R model, it usually can be fixed easily by just assigning NULL to redundant fields. But it is not so clear for mlr3.</p>