code: public CompletionStage<ResponseBuilder> createResource(final ResponseBuilder builder) {
          LOGGER.debug("Creating resource as {}", getIdentifier());
  
          final TrellisDataset mutable = TrellisDataset.createDataset();
          final TrellisDataset immutable = TrellisDataset.createDataset();
  
          return handleResourceCreation(mutable, immutable, builder)
              .whenComplete((a, b) -> mutable.close())
              .whenComplete((a, b) -> immutable.close());
      }
docs: Create a new resource.
  @param builder the response builder
  @return the response builder