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kotlinlang

please can anyone help me with this question:
I've a base abstract fragment that create the base UI with this method
    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view = UI {
            fragmentContainer {
(into this method I want to call an abstract method overrided by derived classes that create own custom UI)
            }
}.view
return view
}