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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 getAppInfo(self, appId):
 """ Every application registered with Portal for ArcGIS has a unique client ID and a list of redirect URIs that are used for OAuth. This operation returns these OAuth-specific properties of an application. You can use this information to update the redirect URIs by using the Update App Info operation. Input: appId - unique id of the application to get the information about. """

        params = {
            "f" : "json",
            "appID" : appId
        }
        url = self._url + "/oauth/getAppInfo"
        return self._get(url=url, param_dict=params,
                         proxy_url=self._proxy_url,
                         proxy_port=self._proxy_port)