code: def get_overview(self):
          
          response = None
          try:
              response = requests.get(
                  urls.overview(self._giid),
                  headers={
                      'Accept': 'application/json, text/javascript, */*; q=0.01',
                      'Accept-Encoding': 'gzip, deflate',
                      'Content-Type': 'application/json',
                      'Cookie': 'vid={}'.format(self._vid)})
          except requests.exceptions.RequestException as ex:
              raise RequestError(ex)
          _validate_response(response)
          return json.loads(response.text)
docs: Get overview for installation