Destiny\Character\ActivityCollection::gWeeklyStrikes PHP Method

    protected function gWeeklyStrikes()
    {
        $items = [];
        foreach ($this as $k => $activity) {
            if ($activity->isWeeklyHeroic() || $activity->isNightfall()) {
                $items[$k] = $activity;
            }
        }
        return $items;
    }