function plusYears($years)
{
return $this->withDate($this->isoDate->plusYears($years));
}
/**
* Returns a copy of this {@code LocalDateTime} with the specified number of years added.
* <p>
* This method adds the specified amount to the years field in three steps:
* <ol>
* <li>Add the input years to the year field</li>
* <li>Check if the resulting date would be invalid</li>
* <li>Adjust the day-of-month to the last valid day if necessary</li>
* </ol>
* <p>
* For example, 2008-02-29 (leap year) plus one year would result in the
* invalid date 2009-02-29 (standard year). Instead of returning an invalid
* result, the last valid day of the month, 2009-02-28, is selected instead.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param int $years the years to add, may be negative
* @return LocalDateTime a {@code LocalDateTime} based on this date-time with the years added, not null
* @throws DateTimeException if the result exceeds the supported date range
*/
public function plusYears($years)
{
$newDate = $this->date->plusYears($years);
return $this->_with($newDate, $this->time);
}
