It is a custom implementation of nested timeline view using RecyclerView.
RxLoader caches the data emitted by your Observable across orientation changes by utilizing an Android Loader, while also providing the results from an Observable preserving the RxJava pattern.
This is a Gradle plugin that will resolve placeholders in your XML strings at build time. There's no need to write any Java or Kotlin code in order to use it, just place your placeholders in string templates and build your project.