code: function Strategy(options, validate) {
    options = options || {};
    options.providerURL = options.providerURL || 'https://api.screenname.aol.com/auth/openid/xrds';
    
    // NOTE: If profile exchange is enabled, AOL is redirecting to the following
    //       URL:
    //
    //           https://api.screenname.aol.com/auth/openidSregAx
    //
    //       Unfortunately, that URL is a blank page which doesn't present any UI
    //       to the user, thus halting the OpenID flow.  Until this issue is
    //       addressed, profile exhange is disabled.
    options.profile =  (options.profile === undefined) ? false : options.profile;
  
    OpenIDStrategy.call(this, options, validate);
    this.name = 'aol';
  }
docs: `Strategy` constructor.
  
  The AOL authentication strategy authenticates requests by delegating to AOL
  using the OpenID 2.0 protocol.
  
  Applications must supply a `verify` callback which accepts an `identifier`,
  and optionally a service-specific `profile`, and then calls the `done`
  callback supplying a `user`, which should be set to `false` if the
  credentials are not valid.  If an exception occured, `err` should be set.
  
  Options:
  - `returnURL`  URL to which AOL will redirect the user after authentication
  - `realm`      the part of URL-space for which an OpenID authentication request is valid
  - `profile`    enable profile exchange, defaults to _true_
  
  Examples:
  
  passport.use(new AOLStrategy({
  returnURL: 'http://localhost:3000/auth/aol/return',
  realm: 'http://localhost:3000/'
  },
  function(identifier, profile, done) {
  User.findByOpenID(identifier, function (err, user) {
  done(err, user);
  });
  }
  ));
  
  @param {Object} options
  @param {Function} verify
  @api public