code: func ClientContextWrite(ctx Context, contexts []*ClientContext) error {
  	render := func(format func(subContext SubContext) error) error {
  		for _, context := range contexts {
  			if err := format(&clientContextContext{c: context}); err != nil {
  				return err
  			}
  		}
  		return nil
  	}
  	return ctx.Write(newClientContextContext(), render)
  }
docs: // ClientContextWrite writes formatted contexts using the Context