string replaceQuoteMatch(string $quoteMatch) Replaces single quotes at the start or end of a

string format(DateTime $dateTime, int $length)

array extractDateOptions(string $matched, int $length) Extract date options from a matched value

string getReverseMatchingRegExp(int $length) Returns a reverse matching regular expression of

abstract string getReverseMatchingRegExp(int $length) Returns a reverse matching

static string getEtcTimeZoneId(string $formattedTimeZone) Get an Etc/GMT timezone

class DayOfWeekTransformer extends

int normalizeHour(int $hour, string $marker = null) Returns a normalized hour value suitable

class DayOfYearTransformer extends

string getReverseMatchingRegExp(int $length) Returns a reverse matching regular expression of