code: func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool {
  	*event = yaml_event_t{
  		typ:        yaml_SCALAR_EVENT,
  		start_mark: mark,
  		end_mark:   mark,
  		value:      nil, // Empty
  		implicit:   true,
  		style:      yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
  	}
  	return true
  }
docs: // Generate an empty scalar event.