code: private void getArtistData() {
          mRetrievedTracks.clear();
          mAdapter.notifyDataSetChanged();
  
          mTracksSubscription =
                  mCheerleaderClient.getArtistTracks()
                          .subscribeOn(Schedulers.io())
                          .observeOn(AndroidSchedulers.mainThread())
                          .subscribe(displayTracks());
  
          mProfileSubscription =
                  mCheerleaderClient.getArtistProfile()
                          .observeOn(AndroidSchedulers.mainThread())
                          .subscribeOn(Schedulers.io())
                          .subscribe(displayArtist());
      }
docs: Used to retrieved the tracks of the artist as well as artist details.