docs: private Flowable<List<ServiceInstance>> convertInstancesResulttoServiceInstances(ListInstancesResult instancesResult) {
          List<ServiceInstance> serviceInstances = new ArrayList<>();
          for (InstanceSummary instanceSummary : instancesResult.getInstances()) {
              try {
                  String uri = "http://" + instanceSummary.getAttributes().get("URI");
                  ServiceInstance serviceInstance = new EC2ServiceInstance(instanceSummary.getId(), new URI(uri)).metadata(instanceSummary.getAttributes()).build();
                  serviceInstances.add(serviceInstance);
              } catch (URISyntaxException e) {
                  return Flowable.error(e);
              }
          }
          return Flowable.just(serviceInstances);
      }