compareTo method
Implementation
@override
int compareTo(NsgDataItem a, NsgDataItem b) {
var valueA = Jiffy.parseFromDateTime(a.getFieldValue(name) as DateTime);
var valueB = Jiffy.parseFromDateTime(b.getFieldValue(name) as DateTime);
return valueA.isAfter(valueB)
? 1
: valueB.isAfter(valueA)
? -1
: 0;
}