static function validate($value) { return parent::validate($value) && self::isNotEmpty($value); }
static function validate($value) { return parent::validate($value) && self::isHost($value); }
static function validate($name) { return parent::validate($name) && self::containsAllowedCharacters($name); }
static function validate($value) { return parent::validate($value) && self::isPhpLabel($value); }