return value;
      }

      @Override
      public V setValue(V value) {
        throw new UnsupportedOperationException();
      }

      @SuppressWarnings("unchecked")
      @Override
      public boolean equals(@Nullable Object o) {
        if (o instanceof Entry) {
          Entry<K, V> e = (Entry<K, V>) o;
          e.setValue(value); // muhahaha!

                getLogger().debug("ExtractData: {}", extractData);
            }
            // meta
            extractData.getKeySet().stream().filter(k -> extractData.getValues(k) != null).forEach(key -> {
                final String[] values = extractData.getValues(key);
                metaDataMap.put(key, values);

                // meta -> content
                if (fessConfig.isCrawlerMetadataContentIncluded(key)) {

                (et, vl) -> ((RequestHeader) et).setUpdatedTime(DfTypeUtil.toLong(vl)), "updatedTime");
        setupEpg(_epgMap, et -> ((RequestHeader) et).getValue(), (et, vl) -> ((RequestHeader) et).setValue(DfTypeUtil.toString(vl)),
                "value");
        setupEpg(_epgMap, et -> ((RequestHeader) et).getWebConfigId(),
                (et, vl) -> ((RequestHeader) et).setWebConfigId(DfTypeUtil.toString(vl)), "webConfigId");

                "updatedTime");
        setupEpg(_epgMap, et -> ((RoleType) et).getValue(), (et, vl) -> ((RoleType) et).setValue(DfTypeUtil.toString(vl)), "value");
    }

    @Override
    public PropertyGateway findPropertyGateway(final String prop) {
        return doFindEpg(_epgMap, prop);
    }

  private final Map<K, V> backingMap;

  /*
   * Per JDK: "the behavior of a map entry is undefined if the backing map has been modified after
   * the entry was returned by the iterator, except through the setValue operation on the map entry"
   * As such, this field must be cleared before every map mutation.
   *
   * Note about volatile: volatile doesn't make it safe to read from a mutable graph in one thread

      @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.
   *

            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));
            result.setValue(DfTypeUtil.toString(source.get("value")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {

                return entry;
              }

              @Override
              @ParametricNullness
              public V setValue(@ParametricNullness V newValue) {
                checkArgument(apply(getKey(), newValue));
                return super.setValue(newValue);
              }
            };
          }
        };
      }
    }

    @Override

                return entry;
              }

              @Override
              @ParametricNullness
              public V setValue(@ParametricNullness V newValue) {
                checkArgument(apply(getKey(), newValue));
                return super.setValue(newValue);
              }
            };
          }
        };
      }
    }

    @Override

    ImmutableMap<String, String> map = ImmutableMap.copyOf(entryList);
    assertThat(map).containsExactly("a", "1", "b", "2").inOrder();
    entryList.get(0).setValue("3");
    assertThat(map).containsExactly("a", "1", "b", "2").inOrder();
  }

  public void testBuilderPutAllEntryList() {
    List<Entry<String, String>> entryList =