code: @JsonIgnore
      public String getReconcileHashCode() {
          TreeMap<String, AtomicInteger> instanceCountMap = new TreeMap<String, AtomicInteger>();
          populateInstanceCountMap(instanceCountMap);
          return getReconcileHashCode(instanceCountMap);
      }
docs: Gets the hash code for this <em>applications</em> instance. Used for
  comparison of instances between eureka server and eureka client.
  
  @return the internal hash code representation indicating the information
  about the instances.