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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 redirect_to(self, url=None, parameters={}):
 """ Redirects the user to the URL passed by parameter or to the URL that we defined in our SSO Request. :param url: The target URL to redirect the user :type url: string :param parameters: Extra parameters to be passed as part of the URL :type parameters: dict :returns: Redirection URL """

        if url is None and 'RelayState' in self.__request_data['get_data']:
            url = self.__request_data['get_data']['RelayState']
        return OneLogin_Saml2_Utils.redirect(url, parameters, request_data=self.__request_data)