code: def merge_comment(d, comment_dict, column=30):
      for k, v in comment_dict.items():
          if isinstance(v, collections.abc.Mapping):
              d[k] = merge_comment(d.get(k, CommentedMap()), v)
          else:
              d.yaml_add_eol_comment(v, key=k, column=column)
      return d
  
label_desc: Use image node_id 2 for calling a global function with example usage: merge_comment(d, comment_dict, column) and returns: d