Keep the interface the same, but change the implementation. Same way you can easily refactor code. For an example see https://www.thestreet.com/tesla/news/mun

Keep the interface the same, but change the implementation. Same way you can easily refactor code. For an example see https://www.thestreet.com/tesla/news/munro-tesla-model-y-octovalve-design-updates https://www.thestreet.com/tesla/news/munro-tesla-model-y-oct...