BackOffActivity.kt

lifecycleScope.launch {
            viewModel.dogImagesFlow.collect {
                when (it) {
                    is ResultWrapper.NetworkError -> {
                        errorText.append("${it.errorMessage} \n")
                       ...
                    }
                    is ResultWrapper.Success<*> -> {
                     ...
                        showLoading(false)
                        adapter.submitList(it.value as? List<String>)
                    }
                    is ResultWrapper.Loading -> {
                       ...
                        showLoading(it.isLoading)
                    }
                }
            }
        }