Optimizing ViewModel with Lifecycle 2.2.0: Passing Arguments/Parameters

CustomViewModelFactory.kt

// Override ViewModelProvider.NewInstanceFactory to create the ViewModel (VM).
class SomeViewModelFactory(private val someString: String): ViewModelProvider.NewInstanceFactory() {
    override fun <T : ViewModel?> create(modelClass: Class<T>): T = SomeViewModel(someString) as T
} 

class SomeViewModel(private val someString: String) : ViewModel() {
    init {
        //TODO: Use 'someString' to init process when VM is created. i.e. Get data request.
    }
}

class Fragment: Fragment() {
    // Create VM in activity/fragment with VM factory.
    // Don't forget to add 'kotlinOptions { jvmTarget = '1.8' } to build.gradle (:app)'    
    val someViewModel: SomeViewModel by viewModels { SomeViewModelFactory("someString") } 
}