human
Solve the following python programming problem given the following code:
def post_outcome_request(self) : 
    '
        POST an OAuth signed request to the Tool Consumer.
        ' 
    if (not self.has_required_attributes ()) : 
        raise InvalidLTIConfigError ('OutcomeRequest does not have all required attributes') 
consumer = oauth2.Consumer (key = self.consumer_key, secret = self.consumer_secret) 
    client = oauth2.Client (consumer) 
    monkey_patch_headers = True 
    monkey_patch_function = None 
    if monkey_patch_headers : 
        import httplib2 
        http = httplib2.Http 
        normalize = http._normalize_headers 
        def my_normalize(self, headers) : 
            print ('My Normalize', headers) 
            ret = normalize (self, headers) 
            if ('authorization' in ret) : 
                ret ['Authorization'] = ret.pop ('authorization') 
print ('My Normalize', ret) 
            return ret 
http._normalize_headers = my_normalize 
        monkey_patch_function = normalize 
(response, content) = client.request (self.lis_outcome_service_url, 'POST', body = self.generate_request_xml (), headers = { 
        'Content-Type' : 'application/xml', 
}) 
    if (monkey_patch_headers and <MASK>) : 
        import httplib2 
        http = httplib2.Http 
        http._normalize_headers = monkey_patch_function 
self.outcome_response = OutcomeResponse.from_post_response (response, content) 
    return self.outcome_response 
    
    Given the code above, what is a proper replacement for <MASK>? Choose among: http, self, consumer, my_normalize, monkey_patch_function, content, client, response, normalize, monkey_patch_headers
assistant
#Here is Python code to print ('My Normalize', headers) 
.
monkey_patch_function