/**
  * {@inheritdoc}
  */
 public static function fromArray(array $values)
 {
     $message = new self();
     $values = array_merge(['required_experience' => [], 'leader_slots' => [], 'trainer_slots' => [], 'search_roll_bonus' => []], $values);
     foreach ($values['required_experience'] as $item) {
         $message->addRequiredExperience($item);
     }
     foreach ($values['leader_slots'] as $item) {
         $message->addLeaderSlots($item);
     }
     foreach ($values['trainer_slots'] as $item) {
         $message->addTrainerSlots($item);
     }
     foreach ($values['search_roll_bonus'] as $item) {
         $message->addSearchRollBonus($item);
     }
     return $message;
 }