setRangeSelect method Null safety
Implementation
void setRangeSelect() {
widget.onSelected({'start': datesRange.start, 'end': datesRange.end});
widget.getSelectedItems({'start': datesRange.start, 'end': datesRange.end});
}
void setRangeSelect() {
widget.onSelected({'start': datesRange.start, 'end': datesRange.end});
widget.getSelectedItems({'start': datesRange.start, 'end': datesRange.end});
}