code: def _get_single_page(self, url_suffix, data, page_num):
          
          data_with_per_page = dict(data)
          data_with_per_page['page'] = page_num
          data_with_per_page['per_page'] = self._get_page_size()
          (url, data_str, headers) = self._url_parts(url_suffix, data_with_per_page,
                                                     content_type=ContentType.form)
          resp = self.http.get(url, headers=headers, params=data_str)
          return self._check_err(resp, url_suffix, data, allow_pagination=True)
docs: Send GET request to API at url_suffix with post_data adding page and per_page parameters to
          retrieve a single page. Page size is determined by config.page_size.
          :param url_suffix: str URL path we are sending a GET to
          :param data: object data we are sending
          :param page_num: int: page number to fetch
          :return: requests.Response containing the result