code: @SuppressWarnings("unchecked")
      public static <M extends Enum<M>> void attach(Service service, String milestore, ServiceMilestone.Evaluation evaluation) throws Exception {
          for (Field field: Beans.getKnownInstanceFields(service.getClass())) {
              if (ServiceMilestone.class.isAssignableFrom(field.getType())) {
                  try {
          ((ServiceMilestone<M>)field.get(service)).attach(Enum.valueOf((Class<M>)getMilestoneEnum(field.getDeclaringClass()), milestore), evaluation);
                      return;
                  } catch (ClassNotFoundException x) { // No Milestone enum class found
                      // keep looking
                  } catch (IllegalArgumentException x) { // No enum constant as named
                      // keep looking
                  }
              }
          }
          throw new IllegalArgumentException("NoSuchMilestone");
      }
docs: Attaches a ServiceMilestone.Evaluation onto a service.