code: func StringFindBetween(s, start, stop string) (between, remainder string, found bool) {
  	begin := strings.Index(s, start)
  	if begin == -1 {
  		return "", s, false
  	}
  	between = s[begin+len(start):]
  	end := strings.Index(between, stop)
  	if end == -1 {
  		return "", s, false
  	}
  	return between[:end], s[begin+len(start)+end+len(stop):], true
  }
docs: // StringFindBetween returns the string between the first occurrences of the tokens start and stop.
  // The remainder of the string after the stop token will be returned if found.
  // If the tokens couldn't be found, then the whole string will be returned as remainder.