code: func (c *cipdSubcommand) doneWithPins(pins []pinInfo, err error) int {
  	return c.doneWithPinMap(map[string][]pinInfo{"": pins}, err)
  }
docs: // doneWithPins is a handy shortcut that prints a pinInfo slice and
  // deduces process exit code based on presence of errors there.
  //
  // This just calls through to doneWithPinMap.