string format(DateTime $dateTime, int $length)

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

getScripts()

string getIcuVersion() Returns the ICU version of the bundles being converted.

class LanguageDataGenerator extends

Filesystem getFilesystem()

bool|string parseCurrency(string $value, string $currency, int $position = null) Not supported

string|null getLanguageName(string $language, string|null $region = null, string $displayLocale = null)

class BufferedBundleReader implements

class RegionDataGenerator extends