human
Solve the following python programming problem given the following code:
def create_oauth_provider(self, app) : 
    def at_generator(request) : 
        return 'foobar' 
def rt_generator(request) : 
        return 'abracadabra' 
app.config ['OAUTH2_PROVIDER_TOKEN_GENERATOR'] = rt_generator 
    app.config ['OAUTH2_PROVIDER_REFRESH_TOKEN_GENERATOR'] = rt_generator 
    return default_provider (app) 

    
    

    Fix the buggy line: app.config ['OAUTH2_PROVIDER_TOKEN_GENERATOR'] = rt_generator
assistant
#Here is Python program to fix the buggy line: app.

app.config ['OAUTH2_PROVIDER_TOKEN_GENERATOR'] = def at_generator(