code: async def open(self) -> 'Tails':
          
  
          LOGGER.debug('Tails.open >>>')
  
          self._reader_handle = await blob_storage.open_reader('default', self._tails_config_json)
  
          LOGGER.debug('Tails.open <<<')
          return self
docs: Open reader handle and return current object.
  
          :return: current object