val resultItems = listOf<SomeResult>(
    SomeResult.ListResult(
        value = listOf("A", "B", "C")
    ),
    SomeResult.IntResult(
        value = 42
    )
)

resultItems.forEach { result ->
    when(result) {
        is SomeResult.ListResult -> println("List: ${result.value}")
        is SomeResult.IntResult -> println("Int: ${result.value}")
    }
}

viewModel.resultLiveData.observe(viewLifecycleOwner, Observer {
    when(it) {
        is SomeResult.ListResult -> println("List: ${result.value}")
        is SomeResult.IntResult -> println("Int: ${result.value}")
    }
})