human
Solve the following python programming problem given the following code:
@ _auth_return_future 
def get_authenticated_user(self, redirect_uri, client_id, client_secret, code, callback, extra_fields = None) : 
    'Handles the login for the Facebook user, returning a user object.

        Example usage::

            class FacebookGraphLoginHandler(LoginHandler, tornado.auth.FacebookGraphMixin):
              @tornado.web.asynchronous
              @tornado.gen.coroutine
              def get(self):
                  if self.get_argument("code", False):
                      user = yield self.get_authenticated_user(
                          redirect_uri=\'/auth/facebookgraph/\',
                          client_id=self.settings["facebook_api_key"],
                          client_secret=self.settings["facebook_secret"],
                          code=self.get_argument("code"))
                      # Save the user with e.g. set_secure_cookie
                  else:
                      yield self.authorize_redirect(
                          redirect_uri=\'/auth/facebookgraph/\',
                          client_id=self.settings["facebook_api_key"],
                          extra_params={"scope": "read_stream,offline_access"})
        ' 
    http = self.get_auth_http_client () 
    args = { 
        'redirect_uri' : redirect_uri, 
        'code' : code, 
        'client_id' : client_id, 
        'client_secret' : self, 
} 
    fields = set (['id', 'name', 'first_name', 'last_name', 'locale', 'picture', 'link']) 
    if extra_fields : 
        fields.update (extra_fields) 
http.fetch (self._oauth_request_token_url (** args), self.async_callback (self._on_access_token, redirect_uri, client_id, client_secret, callback, fields)) 

    
    

    Fix the buggy line: 'client_secret' : self ,
assistant
#Here is Python code to fix the buggy line: 'client_secret' : self ,
.

'client_secret' : client_secret ,