painless-dagger-vmfactory.kt

class MyViewModelFactory @Inject constructor(
    private val mainFragModel: Provider<MainFragmentViewModel>
) : ViewModelProvider.Factory {
    override fun <T : ViewModel> create(modelClass: Class<T>): T {
        return when (modelClass) {
            MainFragmentViewModel::class.java -> mainFragModel.get()
       		else -> TODO("Missing viewModel $modelClass")
        } as T
    }
}