# plusYears method

ZonedDateTime plusYears(

1. int years

)

Adds the specified number of years.

Handles leap year edge cases properly.

Example:

    final leap = ZonedDateTime.parse('2020-02-29T12:00:00Z'); // Leap year
    final next = leap.plusYears(1); // 2021-02-28T12:00:00Z (adjusted)

## Implementation

    ZonedDateTime plusYears(int years) {
      final newLocalDateTime = _localDateTime.plusYears(years);
      return ZonedDateTime.of(newLocalDateTime, _zone);
    }