accepts method
Implementation
@override
bool accepts(CellValue? value) => switch (value) {
null => true,
FormulaCellValue() => true,
IntCellValue() => false,
TextCellValue() => false,
BoolCellValue() => false,
DoubleCellValue() => false,
DateCellValue() => true,
DateTimeCellValue() => true,
TimeCellValue() => false,
};