public PlayerLevelUpRewards(final Status status){
  this.status=status;
  this.rewards=Collections.emptyList();
  this.unlockedItems=Collections.emptyList();
}

public PlayerLevelUpRewards ( final Status status ) { this . status = status ; this . rewards = Collections . emptyList ( ) ; this . unlockedItems = Collections . emptyList ( ) ; }
create new empty result object with the specified status .
