StringBuilder cleanId = new StringBuilder();
        boolean previousWasDash = false;
        for (int i = 0; i < id.length(); i++) {
            char c = id.charAt(i);
            if (Character.isLetter(c)) {
                previousWasDash = false;
                cleanId.append(Character.toLowerCase(c));
            } else {
                if (previousWasDash) {
                    continue;
                }

		return err
	} else if match {
		return nil
	}

	// normalize the name to letters, digits, _ or $
	valid := true
	cleaned := strings.Map(func(r rune) rune {
		switch {
		case unicode.IsLetter(r):
			return 'a'
		case unicode.IsDigit(r):
			return '0'
		case r == '_', r == '$':
			return r
		default:
			valid = false
			return -1
		}
	}, name)

	if valid {

		case strings.ContainsRune("!#$%&()*+-./:<=>?@[]^_{|}~ ", c):
			// Backslash and quote chars are reserved, but
			// otherwise any punctuation chars are allowed
			// in a tag name.
		default:
			if !unicode.IsLetter(c) && !unicode.IsDigit(c) {
				return false
			}
		}
	}
	return true
}

const (
	caseMask     = ^byte(0x20) // Mask to ignore case in ASCII.
	kelvin       = '\u212a'

		}
	}
	return p, nil
}

func isValidWildcardName(s string) bool {
	if s == "" {
		return false
	}
	// Valid Go identifier.
	for i, c := range s {
		if !unicode.IsLetter(c) && c != '_' && (i == 0 || !unicode.IsDigit(c)) {
			return false
		}
	}
	return true
}

func pathUnescape(path string) string {
	u, err := url.PathUnescape(path)
	if err != nil {

	}
	return fmt.Sprintf("with name %q", nv.Name)
}

func validateNamedValueName(name string) error {
	if len(name) == 0 {
		return nil
	}
	r, _ := utf8.DecodeRuneInString(name)
	if unicode.IsLetter(r) {
		return nil
	}
	return fmt.Errorf("name %q does not begin with a letter", name)
}

// ccChecker wraps the driver.ColumnConverter and allows it to be used

	return r == ' ' || r == '\t' || r == '\r' || r == '\n'
}

// isAlphaNumeric reports whether r is an alphabetic, digit, or underscore.
func isAlphaNumeric(r rune) bool {
	return r == '_' || unicode.IsLetter(r) || unicode.IsDigit(r)
}

func hasLeftTrimMarker(s string) bool {
	return len(s) >= 2 && s[0] == trimMarker && isSpace(rune(s[1]))
}

func hasRightTrimMarker(s string) bool {

	m sync.Map
}

type structTypeUncommon struct {
	structType
	u uncommonType
}

// isLetter reports whether a given 'rune' is classified as a Letter.
func isLetter(ch rune) bool {
	return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= utf8.RuneSelf && unicode.IsLetter(ch)
}

// isValidFieldName checks if a string is a valid (struct) field name or not.
//

   */
  @Deprecated
  public static CharMatcher javaDigit() {
    return JavaDigit.INSTANCE;
  }

  /**
   * Determines whether a character is a BMP letter according to {@linkplain
   * Character#isLetter(char) Java's definition}. If you only care to match letters of the Latin
   * alphabet, you can use {@code inRange('a', 'z').or(inRange('A', 'Z'))}.
   *

   */
  @Deprecated
  public static CharMatcher javaDigit() {
    return JavaDigit.INSTANCE;
  }

  /**
   * Determines whether a character is a BMP letter according to {@linkplain
   * Character#isLetter(char) Java's definition}. If you only care to match letters of the Latin
   * alphabet, you can use {@code inRange('a', 'z').or(inRange('A', 'Z'))}.
   *

	s.error(fmt.Sprintf(format, args...))
}

func (s *Scanner) isIdentRune(ch rune, i int) bool {
	if s.IsIdentRune != nil {
		return ch != EOF && s.IsIdentRune(ch, i)
	}
	return ch == '_' || unicode.IsLetter(ch) || unicode.IsDigit(ch) && i > 0
}

func (s *Scanner) scanIdentifier() rune {
	// we know the zero'th rune is OK; start scanning at the next one
	ch := s.next()
	for i := 1; s.isIdentRune(ch, i); i++ {