Can I develop a private action only accessible via my google home or linked account? : <p>I have raspberry pi controlling my garage door and I want to be able to have an action to open or close it via google home / assistant.  </p>

<p>This action is custom and only specific to my needs and I'd like to be able to leverage google to interact with it, but I don't want to publish it for others since it is custom for me.  Can this be done?  I believe with Alexa it is possible and a quick browse through the docs nothing jumped out at me for this scenario.</p>
