/**
* Returns a copy of this {@code OffsetTime} with the specified number of hours added.
* <p>
* This adds the specified number of hours to this time, returning a new time.
* The calculation wraps around midnight.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param int $hours the hours to add, may be negative
* @return OffsetTime an {@code OffsetTime} based on this time with the hours added, not null
*/
public function plusHours($hours)
{
return $this->_with($this->time->plusHours($hours), $this->offset);
}