docs: public HealthCheckConfig withRegions(HealthCheckRegion... regions) {
          com.amazonaws.internal.SdkInternalList<String> regionsCopy = new com.amazonaws.internal.SdkInternalList<String>(regions.length);
          for (HealthCheckRegion value : regions) {
              regionsCopy.add(value.toString());
          }
          if (getRegions() == null) {
              setRegions(regionsCopy);
          } else {
              getRegions().addAll(regionsCopy);
          }
          return this;
      }