docs: def get_kadastrale_afdeling_by_id(self, aid):
          '''
          Retrieve a 'kadastrale afdeling' by id.
  
          :param aid: An id of a `kadastrale afdeling`.
          :rtype: A :class:`Afdeling`.
          '''
  
          def creator():
              url = self.base_url + '/department/%s' % (aid)
              h = self.base_headers
              p = {
                  'geometry': 'full',
                  'srs': '31370'
              }
              res = capakey_rest_gateway_request(url, h, p).json()
              return Afdeling(
                  id=res['departmentCode'],
                  naam=res['departmentName'],
                  gemeente=Gemeente(res['municipalityCode'], res['municipalityName']),
                  centroid=self._parse_centroid(res['geometry']['center']),
                  bounding_box=self._parse_bounding_box(res['geometry']['boundingBox']),
                  shape=res['geometry']['shape']
              )
  
          if self.caches['long'].is_configured:
              key = 'get_kadastrale_afdeling_by_id_rest#%s' % aid
              afdeling = self.caches['long'].get_or_create(key, creator)
          else:
              afdeling = creator()
          afdeling.set_gateway(self)
          return afdeling