cpovirk <******@****.***> 1763415091 -0800

  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;

  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;

    input.add(1, list3);

    assertEquals(asList(1, 2, 3, 4), newArrayList(result));
    assertThat(result.toString()).isEqualTo("[1, 2, 3, 4]");
  }

  public void testConcatVarargs() {
    List<Integer> list1 = newArrayList(1);
    List<Integer> list2 = newArrayList(4);
    List<Integer> list3 = newArrayList(7, 8);
    List<Integer> list4 = newArrayList(9);
    List<Integer> list5 = newArrayList(10);

    List<@Nullable Integer> list8 = Lists.newArrayList(nullInt, nullInt);
    List<@Nullable List<@Nullable Integer>> list =
        Lists.newArrayList(list1, list2, list3, list4, list5, list6, list7, list8, null);
    List<@Nullable List<@Nullable Integer>> sorted = example.sortedCopy(list);

    // [[null, null], [null], [1, null, 2], [1, 1], [1, 2], [1], [2], [], null]
    assertThat(sorted)
        .containsExactly(

    List<@Nullable Integer> list8 = Lists.newArrayList(nullInt, nullInt);
    List<@Nullable List<@Nullable Integer>> list =
        Lists.newArrayList(list1, list2, list3, list4, list5, list6, list7, list8, null);
    List<@Nullable List<@Nullable Integer>> sorted = example.sortedCopy(list);

    // [[null, null], [null], [1, null, 2], [1, 1], [1, 2], [1], [2], [], null]
    assertThat(sorted)
        .containsExactly(

    List<String> list = ImmutableList.of("a", "b", "c");
    assertEquals(Lists.newArrayList("a", "b", "c"), list);
  }

  public void testCreation_fourElements() {
    List<String> list = ImmutableList.of("a", "b", "c", "d");
    assertEquals(Lists.newArrayList("a", "b", "c", "d"), list);
  }

  public void testCreation_fiveElements() {
    List<String> list = ImmutableList.of("a", "b", "c", "d", "e");

  }

  public void testAssertEqualInOrder() {
    List<?> list = asList("a", "b", "c");
    assertEqualInOrder(list, list);

    List<?> fewer = asList("a", "b");
    assertThrows(AssertionFailedError.class, () -> assertEqualInOrder(list, fewer));

    assertThrows(AssertionFailedError.class, () -> assertEqualInOrder(fewer, list));

    List<?> differentOrder = asList("a", "c", "b");

  }

  public void testAssertEqualInOrder() {
    List<?> list = asList("a", "b", "c");
    assertEqualInOrder(list, list);

    List<?> fewer = asList("a", "b");
    assertThrows(AssertionFailedError.class, () -> assertEqualInOrder(list, fewer));

    assertThrows(AssertionFailedError.class, () -> assertEqualInOrder(fewer, list));

    List<?> differentOrder = asList("a", "c", "b");

# Without aliases


@app.post("/optional-list-str", operation_id="optional_list_str")
async def read_optional_list_str(
    p: Annotated[list[str] | None, Body(embed=True)] = None,
):
    return {"p": p}


class BodyModelOptionalListStr(BaseModel):
    p: list[str] | None = None


@app.post("/model-optional-list-str", operation_id="model_optional_list_str")