docs: def detail_poi(self, **kwargs):
          """Obtain detailed info of a given POI.
  
          Args:
              family (str): Family code of the POI (3 chars).
              lang (str): Language code (*es* or *en*).
              id (int): Optional, ID of the POI to query. Passing value -1 will
                  result in information from all POIs.
  
          Returns:
              Status boolean and parsed response (list[PoiDetails]), or
              message string in case of error.
          """
          # Endpoint parameters
          params = {
              'language': util.language_code(kwargs.get('lang')),
              'family': kwargs.get('family')
          }
  
          if kwargs.get('id'):
              params['id'] = kwargs['id']
  
          # Request
          result = self.make_request('detail_poi', {}, **params)
  
          if not util.check_result(result):
              return False, result.get('message', 'UNKNOWN ERROR')
  
          # Parse
          values = util.response_list(result, 'Data')
          return True, [emtype.PoiDetails(**a) for a in values]