whichRelativePreset method
Implementation
DatepickerDateRange_RelativePreset whichRelativePreset() =>
_DatepickerDateRange_RelativePresetByTag[$_whichOneof(0)]!;
DatepickerDateRange_RelativePreset whichRelativePreset() =>
_DatepickerDateRange_RelativePresetByTag[$_whichOneof(0)]!;