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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 configurationStore(self):
 """returns the ConfigurationStore object for this site"""

        url = self._url + "/configstore"

        return ConfigurationStore(url=url,
                                  securityHandler=self._securityHandler,
                                  proxy_url=self._proxy_url,
                                  proxy_port=self._proxy_port)