isoDate static method
Formats date as 'yyyy-MM-dd'
Example:
DateFormatters.isoDate(DateTime(2024, 1, 15)); // '2024-01-15'
Implementation
static String isoDate(DateTime date) {
return '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
}