code: function(options){
    
    // Set the default options
    this.appKey = '';
    this.environment = 'integration';
    this.redirectUri = '';
    this.tokenCookie = 'FS_AUTH_TOKEN';
    this.maxThrottledRetries = 10;
    this.saveAccessToken = false;
    this.accessToken = '';
    this.jwt = '';
    this.middleware = {
      request: [
        requestMiddleware.url,
        requestMiddleware.defaultAcceptHeader,
        requestMiddleware.authorizationHeader, 
        requestMiddleware.disableAutomaticRedirects, 
        requestMiddleware.body
      ],
      response: [
        responseMiddleware.redirect, 
        responseMiddleware.throttling, 
        responseMiddleware.json
      ]
    };
    
    // Process options
    this.config(options);
  }
docs: Create an instance of the FamilySearch SDK Client
  
  @param {Object} options See a description of the possible options in the docs for config().