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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 _get_json(self, urlpart):
 """ gets the result object dictionary """

        url = self._url + "/%s" % urlpart
        params = {
            "f" : "json",

        }
        return self._get(url=url,
                            param_dict=params,
                            securityHandler=self._securityHandler,
                            proxy_url=self._proxy_url,
                            proxy_port=self.proxy_port)