public B withFeatures(Iterable<? extends Feature<?>> features) {
    for (Feature<?> feature : features) {
      this.features.add(feature);
    }
    return self();
  }

  public Set<Feature<?>> getFeatures() {
    return unmodifiableSet(features);
  }

  // Name

  private @Nullable String name;

  /** Configures this builder produce a TestSuite with the given name. */
  @CanIgnoreReturnValue

  public B withFeatures(Iterable<? extends Feature<?>> features) {
    for (Feature<?> feature : features) {
      this.features.add(feature);
    }
    return self();
  }

  public Set<Feature<?>> getFeatures() {
    return unmodifiableSet(features);
  }

  // Name

  private @Nullable String name;

  /** Configures this builder produce a TestSuite with the given name. */
  @CanIgnoreReturnValue

            return null;
        }

        @Override
        public boolean isEqualNode(Node arg) {
            return false;
        }

        @Override
        public Object getFeature(String feature, String version) {
            return null;
        }

        @Override
        public Object setUserData(String key, Object data, org.w3c.dom.UserDataHandler handler) {
            return null;