interface InterfaceRefreshList {
        fun onTextChanged(newText: String)
}

class SignalChange: InterfaceRefreshList {
    override fun onTextChanged(newText: String){
        Log.i("text", newText)}
    }

class TextView {

    var listener: InterfaceRefreshList? = null

    var text: String by Delegates.observable("") { prop, old, new ->
        listener?.onTextChanged(new)
    }
}

fun Greeting() {
    val textView = TextView()
    textView.listener = SignalChange()
    textView.text = "Lorem ipsum"
    textView.text = "dolor sit amet"
}