[Documentation issue] Installing and running bundletools is not explained very well

The bundletool page (https://developer.android.com/studio/command-line/bundletool) says that you can run

bundletool build-apks --bundle=/MyApp/my_app.aab --output=/MyApp/my_app.apks

Before that it does not explain how to install bundletool in a way that allows me to run a command this way.

It would be nice to either add an explanation on how to install bundletool or change the run command in a way that it runs the jar that can be downloaded from Github