@NodeEntity
public class Audit {

    @Transient  //  << note transient - not saved in DB.
    private static Long audit_count = 0L;

    @Transient
    private static final Logger log = LoggerFactory.getLogger(Audit.class);

    @Id @GeneratedValue Long id;

    @Property
    private Instant date;
    public Instant getDate() {return date;}

    @Property
    private Long user_id;
    public Long getUserId() {return user_id;}

    @Property
    private ChangeType type;
    public ChangeType getType() {return type;}

    @Property
    private String comment;
    public String getComment() {return comment;}

    @Property
    private String original_value;
    public String getOriginalValue() {return original_value;}

    @Property
    private String new_value;
    public String getNewValue() {return new_value;}

    @Property
    // a number guaranteed to be in order of audit creation, used implicitly in pageable audit query
    private Long seq;
    public Long getSeq() {return seq;}

    @Relationship("AUDIT")
    BoardPosition ref;
// Implementation...
}

@Data
@NodeEntity
public class AppInfo {

    @Transient
    private static final Logger log = LoggerFactory.getLogger(AppInfo.class);

    @Id @GeneratedValue Long id;
    public Long getId() {return id;}

    @Property
    private Integer schema_id;

//  Implementation...

}