RouterFunction.swift

// Router Function
private func turnLights(on shouldTurnLightsOn: Bool)
{
  if shouldTurnLightsOn
  {
    turnExteriorLightsOn()
    checkForBurnedBulbs()
  }
  else { turnExteriorLightsOff() }
  // When an if statment has only 1 thing to execute i like to write it
  // at the same line with the "if" "else" word, it makes reading your code more fluent.
}