BasicLiveData_04.kt

class SomeViewModel(
  private val getUsersUseCase: GetUserUseCase,
  private val mapper: PresentationMapper
) : ViewModel() {
  
  // Only your viewmodel should update the value.
   private val _domainUsers: MutableLiveData<List<DomainUser>> = MutableLiveData()
   val users: LiveData<List<PresentationUser>> = _domainUsers.switchMap { domainUsers ->
     liveData {
       emit(mapper.mapDomainUsersToPresentation(domainUsers))
     }   
   }
  
  // You can do what ever you want once you have the value.
  val showEmptyView: LiveData<Boolean> = _domainUsers.map { domainUsers -> domainUsers.isNullOrEmpty() }
  
  ...
  
  private fun executeUseCase() {
    viewModelScope.launch {    
      _domainUsers.value = getUserUseCase.someComputation()
    }   
  }
}