Obtain a copy of the calendar object used internally by this formatter. This calendar will have a type (as in gregorian, japanese, buddhist, roc, persian, islamic, etc.) and a timezone that match the type and timezone used by the formatter. The date/time of the object is unspecified.
A copy of the internal calendar object used by this formatter.
Функция IntlDateFormatter::getErrorMessage() - Get the error text from the last operation.