I'm trying to implement the onBackgkround message handle but the instructions suppose that the project was created with java despite the default now is Kotlin.
So I created Application class in the kotlin folder but now there are a couple of errors saying:

Cannot access 'android.app.Application' which is a supertype of 'com.my.app.Application'.
and:
**Cannot access 'java.lang.Object' wh

Google suggests enabling gzip compression before transferring files over the network:

In order to receive a gzip-encoded response you must do two things: Set an Accept-Encoding header, and modify your user agent to contain the string gzip. Here is an example of properly formed HTTP headers for enabling gzip compression:

Acc