I started to integrate glean into the reference browser and followed the documentation in the android components repository. * https://github.com/mozilla-mobile/reference-browser/pull/349 * https://github.com/mozilla-mobile/android-components/tree/master/components/service/glean Overall that worked fine. I took some notes of things where I stumbled a bit: * The documentation mentions how to add the plugin and build script to the "main build.gradle". In understood this as the build.gradle file in the project root. However I think in this case this should go into the build.gradle of the "app" module (since that's where its in the glean sample app too). * I had the same issue with metrics.yaml. I didn't know where I need to put it. I guess into the app module too (looking at the sample app). * I made a copy and paste error when copying the "apply" part into my build.gradle file and setting it up to use the same version as the dependency felt a bit cumbersome. I wonder how we could make that nicer in the future. * Every app needs some way control telemetry in the UI. It took me a while to find `setMetricsEnabled()`. Maybe it's worth mentioning this in the docs or adding this to the sample code. I wasn't 100% sure if that is the correct toggle and whether this is enough and can be toggled at any time (e.g. the user disables telemetry).