/**
* Returns a copy of this LocalDateTime with the day-of-month altered.
*
* If the resulting date is invalid, an exception is thrown.
*
* @param integer $day
*
* @return LocalDateTime
*
* @throws DateTimeException If the day is invalid for the current year and month.
*/
public function withDay($day)
{
return $this->with($this->date->withDay($day), $this->time);
}