@Entity
@Table ( name = "config" )
@Inheritance ( strategy = InheritanceType.JOINED )
@Audited
public abstract class AbstractConfigurationObject <T extends ConfigurationObject> extends AbstractObject implements ConfigurationObjectMutable {

@ManyToMany ( targetEntity = AbstractConfigurationObject.class, fetch = FetchType.LAZY, cascade = {} )
    public Set<@NonNull ConfigurationObject> getUses ()

 @ManyToMany ( targetEntity = AbstractConfigurationObject.class, fetch = FetchType.LAZY, mappedBy = "uses", cascade = {} )
    public Set<@NonNull ConfigurationObject> getUsedBy ()
}

@MappedSuperclass
public class AbstractObject implements BaseObject {

 @Id
    @GeneratedValue ( generator = "system-uuid" )
    @GenericGenerator ( name = "system-uuid", strategy = "uuid2-us" )
    @Column ( length = 16 )
    public UUID getId ()

 @Version
    @Column ( nullable = false )
    public Long getVersion ()
}