code: func (r *renderedFrame) dumpWrappersTo(w io.Writer, from, to int) (n int, err error) {
  	return iotools.WriteTracker(w, func(rawWriter io.Writer) error {
  		w := &indented.Writer{Writer: rawWriter, UseSpaces: true}
  		fmt.Fprintf(w, "From frame %d to %d, the following wrappers were found:\n", from, to)
  		for i, wrp := range r.wrappers {
  			if i != 0 {
  				w.Write(nlSlice)
  			}
  			w.Level = 2
  			for i, line := range wrp {
  				if i == 0 {
  					fmt.Fprintf(w, "%s\n", line)
  					w.Level += 2
  				} else {
  					fmt.Fprintf(w, "%s\n", line)
  				}
  			}
  		}
  		return nil
  	})
  }
docs: // dumpWrappersTo formats the wrappers portion of this renderedFrame.