docs: def _maybe_warn_about_buffer_size():
      """Check the buffer size and issue a warning if it's too large and
      a warning has not been issued for more than 60 seconds.
  
      """
      global _last_warning
  
      if not _last_warning:
          _last_warning = time.time()
  
      if _buffer_size > _warn_threshold and (time.time() - _last_warning) > 120:
          LOGGER.warning('InfluxDB measurement buffer has %i entries',
                         _buffer_size)