[scala] result code: old java style

processRequestOld.scala

def processRequestOld(userId: UUID, requestId: UUID): BusinessResult = {
  val userOpt = getUser(userId)
  if (userOpt.isEmpty) {
    return BusinessResult.UserNotFound
  }

  val requestOpt = getRequestById(requestId)
  if (requestOpt.isEmpty) {
    return BusinessResult.RequestNotFound
  }

  if (checkAccess(requestOpt.get, userOpt.get).isFailure) {
    return BusinessResult.NotOwner
  }

  BusinessResult.Ok
}