MainPresenter.kt

class MainPresenter(private val view: MainView,
                    private val dataProvider: DataProviderAPI) {
 
    private fun loadData() = launch(UI) { // UI - dispatches execution onto Android main UI thread
        view.showLoading()
 
        // CommonPool - represents common pool of shared threads as coroutine dispatcher
        val task = async(CommonPool) { dataProvider.loadData("Task") }
        val result = task.await()
 
        view.showData(result)
    }
 
}