PresentationLayerExample.kt

// Presentation Layer (ViewModel) calls a Use Case
class ProfileViewModel(private val getUserProfile: GetUserProfile) : ViewModel() {
    val userProfile = MutableLiveData<User>()
    
    fun loadProfile(userId: String) {
        viewModelScope.launch {
            val result = getUserProfile(userId)
            userProfile.value = result
        }
    }
}