/**
  * {@inheritdoc}
  */
 public static function fromArray(array $values)
 {
     $message = new self();
     $values = array_merge(['activity_type' => [], 'xp' => [], 'candy' => [], 'stardust' => []], $values);
     foreach ($values['activity_type'] as $item) {
         $message->addActivityType($item);
     }
     foreach ($values['xp'] as $item) {
         $message->addXp($item);
     }
     foreach ($values['candy'] as $item) {
         $message->addCandy($item);
     }
     foreach ($values['stardust'] as $item) {
         $message->addStardust($item);
     }
     return $message;
 }