**HTTP Method**  **Relation (rel)**          **Link**
GET                Up                          /metrics/in
GET                Self                        /metrics/in/{id}
GET                SourceType                  /sourceType/{id}
GET                metricIdFields              /url for each in JSON aarray
Delete             Delete                      /employe/{employeId}

public class MetricDTO {
  private Links links;
  //Getters and setters
  //inside your setters add SLEF , GET , create Delete for current resource

}