Etcher PPA Install

Product support
1

I seek the commands to install Belena Etcher on my Ubuntu 22.04 OS by means of PPA so it will update on its own. In this README.md file:

https://github.com/balena-io/etcher/blob/a42be8ee747f3ecb41305d57f647a082c164e14e/README.md?plain=1#L4

I do see the commands to install the PPA, GPG Key, and Etcher from PPA. What are they?