Using an authenticated proxy server to access ADLS and ABFS storage

Given an environment which does not have direct access to the internet, but has to route all requests through a Proxy that requires authentication Hadoop filesystem commands can not go through.

My understanding of an Official Java blog, is that  this requires a special Authenticator class to be used, which I do not see anywhere in the code, neither I could find any relevant parameter to set the proxy authentication credentials.

I tried to specify the proxy in a form of username:password@host.fqdn and the port via java system properties, but that did not work either.

My use case is to connect to ADLS, but I have not seen relevant properties either for S3.