code: public void updateFixture(final Consumer<FixtureResult> update) {
          final Optional<String> root = threadContext.getRoot();
          if (!root.isPresent()) {
              LOGGER.error("Could not update test fixture: no test fixture running");
              return;
          }
          final String uuid = root.get();
          updateFixture(uuid, update);
      }
docs: Updates current running fixture. Shortcut for {@link #updateFixture(String, Consumer)}.
  
  @param update the update function.