auth (MusicBrainz::Client)

    /*
     * Set user authentication for a MusicBrainz::Client object.
     *
     * This method is optional.  It only needs to be called if you want to
     * submit data to the server and give the user credit for the
     * submission.  If you want to submit data anonymously, don't call this
     * method.  Returns true if the authentication was successful.
     *
     * Aliases:
     *   MusicBrainz::Client#authenticate
     *
     * Examples:
     *   # connect as user "MrMusic", password "s3kr3tp455w0rd"
     *   mb.auth 'MrMusic', 's3kr3tp455w0rd'
     *
     *   # connect as user "MBrox", password "hithere!"
     *   mb.authenticate 'MBrox', 'hithere!'
     *
     */
    static VALUE mb_client_auth(VALUE self, VALUE user, VALUE pass) {