format method
Formats a particular date instance according to the settings of this formatter object
Implementation
String format(ILibDateOptions date) {
String result = '';
final String formatOptions = toJsonString();
final String dateOptions = date.toJsonString();
result = ILibJS.instance
.evaluate(
'new DurationFmt($formatOptions).format($dateOptions).toString()')
.stringResult;
return result;
}