code: func ParseAndKeepRawInputToNumber(
  	numberToParse, defaultRegion string,
  	phoneNumber *PhoneNumber) error {
  	return parseHelper(numberToParse, defaultRegion, true, true, phoneNumber)
  }
docs: // Same as ParseAndKeepRawInput(String, String), but accepts a mutable
  // PhoneNumber as a parameter to decrease object creation when invoked many
  // times.