code: @Override
      public Iterable<LoadBalancerHealthCheck> listLBHealthChecks(@Nullable HealthCheckFilterOptions opts) throws CloudException, InternalException {
          APITrace.begin(provider, "LB.listLBHealthChecks");
          gce = provider.getGoogleCompute();
  
          ArrayList<LoadBalancerHealthCheck> lbhc = new ArrayList<LoadBalancerHealthCheck>();
  
          try {
              TargetPoolList tpl = gce.targetPools().list(ctx.getAccountNumber(), ctx.getRegionId()).execute();
  
              if (tpl.getItems() != null) {
                  Iterator<TargetPool> loadBalancers = tpl.getItems().iterator();
  
                  while (loadBalancers.hasNext()) {
                      TargetPool lb = loadBalancers.next();
                      String loadBalancerName = lb.getName();
  
                      List<String> hcs = lb.getHealthChecks();
                      if ((hcs != null) && (!hcs.isEmpty())) {
                          String healthCheckName = hcs.get(0);
                          if (healthCheckName != null) {
                              healthCheckName = healthCheckName.substring(healthCheckName.lastIndexOf("/") + 1);
                              HttpHealthCheck hc = gce.httpHealthChecks().get(ctx.getAccountNumber(), healthCheckName).execute();
                              if (hc != null) {
                                  LoadBalancerHealthCheck healthCheckItem = toLoadBalancerHealthCheck(loadBalancerName, hc);
                                  lbhc.add(healthCheckItem);
                              }
                          }
                      }
                  }
              }
          } catch (IOException e) {
              if (e.getClass() == GoogleJsonResponseException.class) {
                  GoogleJsonResponseException gjre = (GoogleJsonResponseException)e;
                  throw new GoogleException(CloudErrorType.GENERAL, gjre.getStatusCode(), gjre.getContent(), gjre.getDetails().getMessage());
              } else
                  throw new CloudException(e);
          }
          finally {
              APITrace.end();
          }
          return lbhc;
      }
docs: /*
  Inventory Load Balancers and list their associated Health Checks.
  Caveat, will only show FIRST health check