code: def _do_create_list_action(act, kw):
      
      acts = []
      for a in act:
          aa = _do_create_action(a, kw)
          if aa is not None: acts.append(aa)
      if not acts:
          return ListAction([])
      elif len(acts) == 1:
          return acts[0]
      else:
          return ListAction(acts)
docs: A factory for list actions.  Convert the input list into Actions
      and then wrap them in a ListAction.