code: public int equivalenceCode()
  	{
  		int result = 29 + (DB != null ? DB.hashCode() : 0);
  		result = 29 * result + (DB_VERSION != null ? DB_VERSION.hashCode() : 0);
  		result = 29 * result + (ID_VERSION != null ? ID_VERSION.hashCode() : 0);
  		result = 29 * result + (ID != null ? ID.hashCode() : 0);
  		return result;
  	}
docs: ------------------------ CANONICAL METHODS ------------------------