code: def to_data(b:ItemsList):
      "Recursively map lists of items in `b ` to their wrapped data."
      if is_listy(b): return [to_data(o) for o in b]
      return b.data if isinstance(b,ItemBase) else f to_data(b:ItemsList):
      "Recursively map lists of items in `b ` to their wrapped data."
      if is_listy(b): return [to_data(o) for o in b]
      return b.data if isinstance(b,ItemBase) else b
docs: Recursively map lists of items in `b ` to their wrapped data.