TypeInferenceOrNot.kt

fun goToOwnersIndex() : Mono<ServerResponse> {
  return ok().html().render("owners/index",
    mapOf("owners" to ownersRepository.findAll().map { Pair(it, emptySet<Pet>()) },
          "pets" to petRepository.findAll().collectMultimap { it.owner }))
}

// using type inference
fun goToOwnersIndex() = ok().html().render("owners/index",
  mapOf("owners" to ownersRepository.findAll().map { Pair(it, emptySet<Pet>()) },
        "pets" to petRepository.findAll().collectMultimap { it.owner }))