getAudioLanguagesAndRoles() {
    return shaka.Player.getLanguageAndRolesFrom_(this.getVariantTracks());
  }
Return a list of audio language-role combinations available.  If the
player has not loaded any content, this will return an empty list.

<br>

This API is deprecated and will be removed in version 5.0, please migrate
to using `getAudioTracks` and `selectAudioTrack`.

@return {!Array<shaka.extern.LanguageRole>}
@deprecated
@export