src/ZonedDateTime.php
public function plusPeriod(Period $period) : ZonedDateTime
    {
        return ZonedDateTime::of($this->localDateTime->plusPeriod($period), $this->timeZone);
    }
public function plusPeriod(Period $period) : ZonedDateTime
    {
        return ZonedDateTime::of($this->localDateTime->plusPeriod($period), $this->timeZone);
    }
public function plusPeriod ( Period $ period ) : ZonedDateTime { return ZonedDateTime :: of ( $ this -> localDateTime -> plusPeriod ( $ period ) , $ this -> timeZone ) ; }
Returns a copy of this ZonedDateTime with the specified Period added.

@param Period $period

@return ZonedDateTime
Returns a copy of this ZonedDateTime with the specified Period added .