A trick that work even better is to wrap the models you want to work with in a model for the sake of passing detach to the wrapped models. That wrapper model would have a couple of convenience methods to get the values of the wrapped models, and the wrapper model would be the model to set on your page/ top level component.
Eelco
One trick is to use an object that contains the objects you plan to work with, and make your models work on that.
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