class ActorId extends Object implements Comparable<ActorId> {

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }

    if (obj == null) {
      return false;
    }

    if (getClass() != obj.getClass()) {
      return false;
    }

    return hasEqualContent(this, (ActorId) obj);
  }

  public  ActorId(String id);

}