Code for the article: "The power of lazy properties in Kotlin"

TeamRepository.kt

class TeamRepository(appSchedulers: AppSchedulers) {
  private val viewState by lazy(::createViewStateLiveData)

  private fun createViewStateLiveData(): LiveData<ViewState> =
      teamRepository.teamMembersStream()
          .map(::mapPresentingState)
          .onErrorReturn(::mapErrorState)
          .startWith(ViewState.Loading)
          .subscribeOn(appSchedulers.io)
          .observeOn(appSchedulers.main)
          .toLiveData()
}