indexingHelper.deleteDocumentsByDocId(client, docList);
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(0, ((List<String>) resultMap.get("ids")).size());

        docList.add("001");
        indexingHelper.deleteDocumentsByDocId(client, docList);
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(1, ((List<String>) resultMap.get("ids")).size());

        lowerBound = (index == 0) ? Cut.<C>belowAll() : ranges.get(index - 1).upperBound;
      } else {
        lowerBound = ranges.get(index).upperBound;
      }

      Cut<C> upperBound;
      if (positiveBoundedAbove && index == size - 1) {
        upperBound = Cut.<C>aboveAll();
      } else {
        upperBound = ranges.get(index + (positiveBoundedBelow ? 0 : 1)).lowerBound;
      }

            KeyPresentBehavior.ANY_PRESENT,
            KeyAbsentBehavior.NEXT_LOWER);
    if (index == -1) {
      return null;
    } else {
      Range<K> range = ranges.get(index);
      return range.contains(key) ? values.get(index) : null;
    }
  }

  @Override
  @CheckForNull
  public Entry<Range<K>, V> getEntry(K key) {
    int index =
        SortedLists.binarySearch(
            ranges,

      if (size != Integer.MAX_VALUE) {
        Preconditions.checkElementIndex(index, size());
      } // else no check necessary, all index values are valid
      ArrayReference<? extends L> existingRef = locks.get(index);
      L existing = existingRef == null ? null : existingRef.get();
      if (existing != null) {
        return existing;
      }
      L created = supplier.get();

    Itr(ImmutableList<E> list, int index) {
      super(list.size(), index);
      this.list = list;
    }

    @Override
    protected E get(int index) {
      return list.get(index);
    }
  }

  @Override
  public int indexOf(@CheckForNull Object object) {
    return (object == null) ? -1 : Lists.indexOfImpl(this, object);
  }

  @Override

            if (value.getClass().isArray()) {
                return Array.get(value, index);
            }

            if (value instanceof List) {
                return ((List) value).get(index);
            }
        } catch (NumberFormatException | IndexOutOfBoundsException e) {
            return null;
        }

        final String message = String.format(

    // True if getValue never returns null.
    private boolean isFull() {
      return size == keyToIndex().size();
    }

    K getKey(int index) {
      return keyToIndex().keySet().asList().get(index);
    }

    @CheckForNull
    abstract V getValue(int keyIndex);

    @Override
    ImmutableSet<K> createKeySet() {
      return isFull() ? keyToIndex().keySet() : super.createKeySet();
    }

                if (index.intValue() < 0) {
                    location = sourceLocations.get(Integer.valueOf(~index.intValue()));
                } else {
                    location = targetLocations.get(index);
                }
                locations.put(Integer.valueOf(locations.size()), location);
            }
        }
        result.setLocations(locations);

        return result;

    }
  }

  @Test fun nullHostileProtocolList() {
    val nullHostileProtocols =
      object : AbstractList<Protocol?>() {
        override val size: Int = 1

        override fun get(index: Int) = Protocol.HTTP_1_1

        override fun contains(element: Protocol?): Boolean {
          if (element == null) throw NullPointerException()
          return super.contains(element)
        }

    // True if getValue never returns null.
    private boolean isFull() {
      return size == keyToIndex().size();
    }

    K getKey(int index) {
      return keyToIndex().keySet().asList().get(index);
    }

    @CheckForNull
    abstract V getValue(int keyIndex);

    @Override
    ImmutableSet<K> createKeySet() {
      return isFull() ? keyToIndex().keySet() : super.createKeySet();
    }