code: def decorate(*reversed_views):
      
      fns = reversed_views[::-1]
      view = fns[0]
      for wrapper in fns[1:]:
          view = wrapper(view)
      return view
docs: provide a syntax decorating views without nested calls.
  
      instead of:
      json_api_call(etag(<hash_fn>)(<view_fn>)))
  
      you can write:
      decorate(json_api_call, etag(<hash_fn>), <view_fn>)