string getErrorMessage() Returns collator's last error message. Always returns the UZEROERROR_MESSAGE

bool setAttribute(int $attr, int $val) Not supported. Set a collator's attribute.

bool|string getTextAttribute(int $attr) Not supported. Returns a formatter text attribute value

static string getIcuStubVersion() Returns the ICU version that the stub classes mimic

string getLocale(int $type = Locale::ACTUAL_LOCALE) Returns the collator's locale.

offsetExists($key) {@inheritdoc} Parameters

int getCalendar() Returns the formatter's calendar.

offsetUnset($offset) Parameters $offset

afterCreateStub(

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