code: @Setup(Level.Trial)
      public void setupFeatureManager() {
          FeatureManager featureManager = new FeatureManagerBuilder()
                  .featureEnums(OverheadFeature.class)
                  .stateRepository(new InMemoryStateRepository())
                  .userProvider(new NoOpUserProvider())
                  .build();
          manager = featureManager;
          // set the StaticFeatureManagerProvider to use this feature manager
          StaticFeatureManagerProvider.setFeatureManager(featureManager);
      }
docs: create an in-memory state repository for our feature