whichOneofField method
Implementation
TestHugeFieldNumbersLite_OneofField whichOneofField() => _TestHugeFieldNumbersLite_OneofFieldByTag[$_whichOneof(0)]!;
TestHugeFieldNumbersLite_OneofField whichOneofField() => _TestHugeFieldNumbersLite_OneofFieldByTag[$_whichOneof(0)]!;