addCadvisorFlags(fs)
	addCredentialProviderFlags(fs)
	verflag.AddFlags(fs)
	logs.AddFlags(fs, logs.SkipLoggingConfigurationFlags())
}

// normalize replaces underscores with hyphens
// we should always use hyphens instead of underscores when registering kubelet flags
func normalize(s string) string {
	return strings.Replace(s, "_", "-", -1)
}

  brackets: disable
  colons: enable
  commas: disable
  comments: disable
  comments-indentation: disable
  document-end: disable
  document-start: disable
  empty-lines: disable
  empty-values: disable
  hyphens: enable
  indentation: disable
  key-duplicates: enable
  key-ordering: disable
  line-length: disable
  new-line-at-end-of-file: disable
  new-lines: enable
  octal-values: disable
  quoted-strings: disable

[
  {
    "comment": "Label with hyphens in 3rd and 4th position",
    "input": "aa--",
    "output": "aa--"
  },
  {
    "input": "a†--",
    "output": "xn--a---kp0a"
  },
  {
    "input": "ab--c",
    "output": "ab--c"
  },
  {
    "comment": "Label with leading hyphen",
    "input": "-x",
    "output": "-x"
  },
  {
    "input": "-†",
    "output": "xn----xhn"
  },
  {
    "input": "-x.xn--zca",

}

func parsePrerelease(v string) (t, rest string, ok bool) {
	// "A pre-release version MAY be denoted by appending a hyphen and
	// a series of dot separated identifiers immediately following the patch version.
	// Identifiers MUST comprise only ASCII alphanumerics and hyphen [0-9A-Za-z-].
	// Identifiers MUST NOT be empty. Numeric identifiers MUST NOT include leading zeroes."
	if v == "" || v[0] != '-' {
		return
	}

		errs = append(errs, "must contain only alpha-numeric characters (a-z, 0-9), and hyphens (-)")
	}
	if !portNameOneLetterRegexp.MatchString(port) {
		errs = append(errs, "must contain at least one letter (a-z)")
	}
	if strings.Contains(port, "--") {
		errs = append(errs, "must not contain consecutive hyphens")
	}
	if len(port) > 0 && (port[0] == '-' || port[len(port)-1] == '-') {

			t.Errorf("expected true for %q: %v", val, msgs)
		}
	}

	badValues := []string{"longerthan15characters", "", strings.Repeat("a", 16), "12345", "1-2-3-4", "-begin", "end-", "two--hyphens", "whois++"}
	for _, val := range badValues {
		if msgs := IsValidPortName(val); len(msgs) == 0 {
			t.Errorf("expected false for %q", val)
		}
	}
}

func TestIsQualifiedName(t *testing.T) {

Most of the standard headers are separated by a "hyphen" character, also known as the "minus symbol" (`-`).

But a variable like `user-agent` is invalid in Python.

So, by default, `Header` will convert the parameter names characters from underscore (`_`) to hyphen (`-`) to extract and document the headers.

}

// ValidateLabels sets whether to check the mandatory label validation criteria
// as defined in Section 5.4 of RFC 5891. This includes testing for correct use
// of hyphens ('-'), normalization, validity of runes, and the context rules.
// In particular, ValidateLabels also sets the CheckHyphens and CheckJoiners flags
// in UTS #46.
func ValidateLabels(enable bool) Option {

}

// ValidateLabels sets whether to check the mandatory label validation criteria
// as defined in Section 5.4 of RFC 5891. This includes testing for correct use
// of hyphens ('-'), normalization, validity of runes, and the context rules.
// In particular, ValidateLabels also sets the CheckHyphens and CheckJoiners flags
// in UTS #46.
func ValidateLabels(enable bool) Option {

		}
	}
	return nil, 0, false
}

func parseTagName(s string, i int) (string, int, bool) {
	// “A tag name consists of an ASCII letter followed by zero or more ASCII letters, digits, or hyphens (-).”
	if i < len(s) && isLetter(s[i]) {
		j := i + 1
		for j < len(s) && isLDH(s[j]) {
			j++
		}
		return s[i:j], j, true
	}
	return "", 0, false
}