Get ViewModel scoped to this Fragment (fragment-ktx)

GetFragmentViewModel.kt

//my sample 
//https://github.com/alexshr/android-kotlin-fundamentals-apps/tree/master/MarsRealEstateFinal

//doc
//https://developer.android.com/reference/kotlin/androidx/fragment/app/package-summary#viewmodels

version_fragment = '1.2.0-alpha01'

implementation "androidx.fragment:fragment-ktx:${version_fragment}"
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// Get a reference to the ViewModel scoped to this Fragment (fragment-ktx)
val viewModel by viewModels<DetailViewModel> {DetailViewModelFactory(marsProperty, application)}

//default provider (viewmodel without args)
val viewModel by viewModels<OverviewViewModel>()
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class DetailViewModelFactory(
        private val marsProperty: MarsProperty,
        private val application: Application) : ViewModelProvider.Factory {
    @Suppress("unchecked_cast")
    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
        if (modelClass.isAssignableFrom(DetailViewModel::class.java)) {
            return DetailViewModel(marsProperty, application) as T
        }
        throw IllegalArgumentException("Unknown ViewModel class")
    }
}