Create DelegateChooser from JavaScript dynamically. How?

[bogong]

Hello all!
I know how to create DelegateChooser manually. Something like this:

DelegateChooser {

    id: chooser
    role: "type"
    DelegateChoice { roleValue: "info"; ItemDelegate { ... } }
    DelegateChoice { roleValue: "switch"; SwitchDelegate { ... } }
    DelegateChoice { roleValue: "swipe"; SwipeDelegate { ... } }
}

The question - How to create it correctly from JavaScript where DelegateChoice is creating dynamically?