backingMap.remove(rowKey);
        wholeRow = null;
        backingRowMap = null;
      }
    }

    @Override
    public boolean containsKey(@Nullable Object key) {
      return rangeContains(key) && super.containsKey(key);
    }

    @Override
    public @Nullable V put(C key, V value) {
      checkArgument(rangeContains(checkNotNull(key)));
      return super.put(key, value);

    @Override
    @ParametricNullness
    public V apply(@ParametricNullness K key) {
      V result = map.get(key);
      checkArgument(result != null || map.containsKey(key), "Key '%s' not present in map", key);
      // The unchecked cast is safe because of the containsKey check.
      return uncheckedCastNullableTToT(result);
    }

    @Override
    public boolean equals(@Nullable Object o) {

        enumMap.put(CrawlerStatus.DONE, "Done");

        assertEquals(3, enumMap.size());
        assertTrue(enumMap.containsKey(CrawlerStatus.INITIALIZING));
        assertTrue(enumMap.containsKey(CrawlerStatus.RUNNING));
        assertTrue(enumMap.containsKey(CrawlerStatus.DONE));
    }

            }
            accessResultData.setId(accessResult.getId());

            final Map<String, AccessResultImpl<Long>> arMap = dataHelper.getAccessResultMap(accessResult.getSessionId());
            if (arMap.containsKey(accessResult.getUrl())) {
                throw new CrawlerSystemException(accessResult.getUrl() + " already exists.");
            }
            arMap.put(accessResult.getUrl(), accessResult);
        }

    }

     *
     * @param key the key to check for existence
     * @return true if the key exists, false otherwise
     */
    public boolean containsKey(final String key) {
        return params.containsKey(key);
    }

    /**
     * Returns a copy of the internal parameter map as a standard Map.
     * The returned map is a copy and modifications will not affect this instance.
     *

        backingMap.remove(rowKey);
        wholeRow = null;
        backingRowMap = null;
      }
    }

    @Override
    public boolean containsKey(@Nullable Object key) {
      return rangeContains(key) && super.containsKey(key);
    }

    @Override
    public @Nullable V put(C key, V value) {
      checkArgument(rangeContains(checkNotNull(key)));
      return super.put(key, value);

        final CrawlerStatsHelper crawlerStatsHelper = ComponentUtil.getCrawlerStatsHelper();
        synchronized (indexUpdateCallback) {
            // required check
            if (!dataMap.containsKey(fessConfig.getIndexFieldUrl()) || dataMap.get(fessConfig.getIndexFieldUrl()) == null) {
                logger.warn("Could not add a doc. Invalid data: {}", dataMap);
                return;
            }

    if (comparator == null) {
      comparator = (Comparator<? super K>) NATURAL_ORDER;
    }
    return comparator;
  }

  @Override
  public boolean containsKey(Object key) {
    try {
      return delegate.containsKey(checkValid(key));
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsValue(Object value) {

    map.putInstance(Integer.class, null);
    assertTrue(map.containsKey(TypeToken.of(Integer.class)));
    assertTrue(map.entrySet().contains(immutableEntry(TypeToken.of(Integer.class), null)));
    assertNull(map.get(TypeToken.of(Integer.class)));
    assertNull(map.getInstance(Integer.class));

    map.putInstance(Long.class, null);
    assertTrue(map.containsKey(TypeToken.of(Long.class)));

    if (comparator == null) {
      comparator = (Comparator<? super K>) NATURAL_ORDER;
    }
    return comparator;
  }

  @Override
  public boolean containsKey(Object key) {
    try {
      return delegate.containsKey(checkValid(key));
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsValue(Object value) {