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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 kml(self):
 """returns the kml functions for server"""

        url = self._url + "/kml"
        return _kml.KML(url=url,
                        securityHandler=self._securityHandler,
                        proxy_url=self._proxy_url,
                        proxy_port=self._proxy_port,
                        initialize=True)