docs: function StormpathAccessTokenAuthenticationResult(client, data) {
    if (!(this instanceof StormpathAccessTokenAuthenticationResult)) {
      return new StormpathAccessTokenAuthenticationResult(client, data);
    }
  
    Object.defineProperty(this, 'client', {
      enumerable: false,
      value: client
    });
  
    for (var key in data) {
      if (data.hasOwnProperty(key)) {
        this[key] = data[key];
      }
    }
  }