isAtSameYearAs method
Returns if two dates are in same year.
Assumes both this and other
has same timezone
To convert both to UTC
before comparison, set enforceUTC
to true
Implementation
bool isAtSameYearAs(
DateTime other, {
bool enforceUTC = false,
}) =>
_isAtSameUnitAs(
other,
DurationUnit.year,
enforceUTC: enforceUTC,
);