@SuppressWarnings("unchecked")
      Entry<?, @Nullable Object> nullableValueEntry = (Entry<?, @Nullable Object>) entry;
      nullableValueEntry.setValue(null);
      fail("setValue on unmodifiable Map.Entry succeeded");
    } catch (UnsupportedOperationException expected) {
    }
  }

  /**
   * Verifies that an Iterator is unmodifiable.
   *

      Range<K> range, V value, @CheckForNull Entry<Cut<K>, RangeMapEntry<K, V>> entry) {
    if (entry != null
        && entry.getValue().getKey().isConnected(range)
        && entry.getValue().getValue().equals(value)) {
      return range.span(entry.getValue().getKey());
    }
    return range;
  }

  @Override
  public void putAll(RangeMap<K, ? extends V> rangeMap) {

        map.put("boost2", 0);
        assertTrue(0.0f == docBoostMatcher.getValue(map));

        map.put("boost1", 1);
        map.put("boost2", 0);
        assertTrue(10.0f == docBoostMatcher.getValue(map));

        map.put("boost1", 1);
        map.put("boost2", 2);
        assertTrue(12.0f == docBoostMatcher.getValue(map));
    }

                    if (e.getValue() instanceof String[]) {
                        final String[] values = (String[]) e.getValue();
                        for (final String v : values) {
                            result.getSearchFieldLogList().add(new Pair<>(e.getKey(), v));
                        }
                    } else if (e.getValue() instanceof List) {

        String title = DocumentUtil.getValue(document, fessConfig.getIndexFieldTitle(), String.class);
        if (StringUtil.isBlank(title)) {
            title = DocumentUtil.getValue(document, fessConfig.getIndexFieldFilename(), String.class);
            if (StringUtil.isBlank(title)) {
                title = DocumentUtil.getValue(document, fessConfig.getIndexFieldUrl(), String.class);
            }

                continue;
            }
            final Object value = srcPropertyDesc.getValue(src);
            if (!options.isTargetValue(value)) {
                continue;
            }
            final Object convertedValue = options.convertValue(value, destPropertyName, destPropertyDesc.getPropertyType());
            destPropertyDesc.setValue(dest, convertedValue);
        }
    }

    /**

            assertEquals("lib/tools.jar", config0.getChild("toolsJar").getValue());
            assertEquals(2, config0.getChildCount());
            Xpp3Dom config1 = (Xpp3Dom) jdks.getToolchains().get(1).getConfiguration();
            assertEquals(2, config1.getChildCount());
            assertEquals("lib/classes.jar", config1.getChild("toolsJar").getValue());
            assertEquals(2, jdksExtend.getToolchains().size());
        }

      K key = entry.getKey();
      Collection<V> collection = filterCollection(entry.getValue(), new ValuePredicate(key));
      if (!collection.isEmpty()
          && predicate.apply(Maps.<K, Collection<V>>immutableEntry(key, collection))) {
        if (collection.size() == entry.getValue().size()) {
          entryIterator.remove();
        } else {
          collection.clear();
        }

            itemList.add(createItem(entry.getKey(), entry.getValue()));
        }
        return itemList;
    }

    public static List<Map<String, String>> getPropItems() {
        final List<Map<String, String>> itemList = new ArrayList<>();
        for (final Map.Entry<Object, Object> entry : System.getProperties().entrySet()) {
            itemList.add(createItem(entry.getKey(), entry.getValue()));
        }
        return itemList;

    return delegate!!.isValid
  }

  override fun putValue(
    s: String,
    o: Any,
  ) {
    delegate!!.putValue(s, o)
  }

  override fun getValue(s: String): Any {
    return delegate!!.getValue(s)
  }

  override fun removeValue(s: String) {
    delegate!!.removeValue(s)
  }

  override fun getValueNames(): Array<String> {
    return delegate!!.valueNames
  }