Inheritance: extends Illuminate\Support\Collection
 public function __construct(Advisors $account, array $items = [])
 {
     foreach ($items as $key => $properties) {
         if (!isset($this->lookup[$key])) {
             if (\App::isLocal()) {
                 throw new \Exception('Unknown identifier - ' . $key);
             }
             continue;
         }
         $class = "Destiny\\AdvisorsTwo\\Activity\\" . $this->lookup[$key];
         /** @var Activity $activity */
         $activity = new $class($account, $properties);
         $items[$activity->identifier] = $activity;
     }
     parent::__construct($items);
 }