public static <T extends @Nullable Object> List<List<T>> partition(List<T> list, int size) {
    checkNotNull(list);
    checkArgument(size > 0);
    return (list instanceof RandomAccess)
        ? new RandomAccessPartition<>(list, size)
        : new Partition<>(list, size);
  }

  private static class Partition<T extends @Nullable Object> extends AbstractList<List<T>> {
    final List<T> list;
    final int size;

                assertEquals(pageSize, list.size());
                assertEquals(allRecordCount, list.getAllRecordCount());
                assertEquals(100, list.getAllPageCount());
                assertEquals(20, list.getCurrentEndRecordNumber());
                assertEquals(2, list.getCurrentPageNumber());
                assertEquals(11, list.getCurrentStartRecordNumber());
                assertEquals(0, list.getOffset());

): List<R> {
    if (list.isEmpty()) {
        return noElementSplitFunction(expectedBucketNumber)
    }
    if (expectedBucketNumber == 1) {
        return listOf(smallElementAggregateFunction(list))
    }

    val roughSizeOfEachBucket = list.sumOf(toIntFunction) / expectedBucketNumber
    if (roughSizeOfEachBucket == 0) {

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<BadWord> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<BadWord> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<BadWord> list, RequestOptionCall<BulkRequestBuilder> call,

    }

    public int[] batchInsert(List<BoostDocumentRule> list) {
        return batchInsert(list, null, null);
    }

    public int[] batchInsert(List<BoostDocumentRule> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchInsert(list, call, null);
    }

    public int[] batchInsert(List<BoostDocumentRule> list, RequestOptionCall<BulkRequestBuilder> call,

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<DuplicateHost> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<DuplicateHost> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

        return doBatchInsert(new BulkList<>(list, call, entityCall), null);
    }

    public int[] batchUpdate(List<JobLog> list) {
        return batchUpdate(list, null, null);
    }

    public int[] batchUpdate(List<JobLog> list, RequestOptionCall<BulkRequestBuilder> call) {
        return batchUpdate(list, call, null);
    }

    public int[] batchUpdate(List<JobLog> list, RequestOptionCall<BulkRequestBuilder> call,

  }

  public void testCartesianProduct_unrelatedTypes() {
    List<Integer> x = list(1, 2);
    List<String> y = list("3", "4");

    List<Object> exp1 = list((Object) 1, "3");
    List<Object> exp2 = list((Object) 1, "4");
    List<Object> exp3 = list((Object) 2, "3");
    List<Object> exp4 = list((Object) 2, "4");

    assertThat(Lists.<Object>cartesianProduct(x, y))

                final ListResultBean<WebConfig> list = new ListResultBean<>();
                list.add((WebConfig) crawlingConfigHelper.getCrawlingConfig("W1"));
                list.add((WebConfig) crawlingConfigHelper.getCrawlingConfig("W2"));
                list.add((WebConfig) crawlingConfigHelper.getCrawlingConfig("W3"));
                return list;
            }
        }, WebConfigBhv.class.getCanonicalName());

      return isSubtype(list);
    }

    @TestSubtype(suppressGetSupertype = true, suppressGetSubtype = true)
    public <T> Iterable<? extends T> wildCardsDoNotMatchByUpperBound(List<?> list) {
      return notSubtype(list);
    }

    @TestSubtype(suppressGetSupertype = true, suppressGetSubtype = true)
    public <T> Iterable<? super String> wildcardsMatchByLowerBound(