code: public java.util.List<ResourceKey> getFailedItems() {
          if (failedItems == null) {
              failedItems = new com.amazonaws.internal.SdkInternalList<ResourceKey>();
          }
          return failedItems;
      }
docs: <p>
  For resources that have failed to start execution, the API returns a resource key object.
  </p>
  
  @return For resources that have failed to start execution, the API returns a resource key object.