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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def request_access_token(self, params):
 """ Google requires correct content-type for POST requests """

        return self.client().request(self.access_token_url, method="POST", body=urllib.urlencode(params), headers={'Content-Type':'application/x-www-form-urlencoded'})