@SuppressWarnings("unchecked")
                    Map<String, Object> nestedMap = (Map<String, Object>) params.get("nested");
                    if (nestedMap.containsKey("innerKey")) {
                        return createMockRescorerBuilder();
                    }
                }

                return null;
            }
        };

        // Test with nested parameters

              @Override
              public NavigableSet<String> create(String[] elements) {
                NavigableSet<String> innerSet = new TreeSet<>();
                Collections.addAll(innerSet, elements);
                return Collections.checkedNavigableSet(innerSet, String.class);
              }
            })
        .named("checkedNavigableSet/TreeSet, natural")
        .withFeatures(

            new TestStringSetGenerator() {
              @Override
              public Set<String> create(String[] elements) {
                Set<String> innerSet = new HashSet<>();
                Collections.addAll(innerSet, elements);
                return unmodifiableSet(innerSet);
              }
            })
        .named("unmodifiableSet/HashSet")
        .withFeatures(
            CollectionFeature.NONE,