code: def make_mapping(self) -> None:
          
          start_mark = StreamMark('generated node', 0, 0, 0)
          end_mark = StreamMark('generated node', 0, 0, 0)
          self.yaml_node = yaml.MappingNode('tag:yaml.org,2002:map', list(),
                                            start_mark, end_mark)
docs: Replaces the node with a new, empty mapping.
  
          Note that this will work on the Node object that is passed to \
          a yatiml_savorize() or yatiml_sweeten() function, but not on \
          any of its attributes or items. If you need to set an attribute \
          to a complex value, build a yaml.Node representing it and use \
          set_attribute with that.