qrList = new QueryResponseList(null, 0, 20, 0) {
            @Override
            public int size() {
                return 20;
            }
        };
        qrList.allRecordCount = 20;
        qrList.calculatePageInfo();
        pnList = qrList.getPageNumberList();
        assertEquals(1, pnList.size());
        assertEquals("1", pnList.get(0));

        qrList = new QueryResponseList(null, 0, 20, 0) {

   *     size}
   * @throws IllegalArgumentException if {@code size} is negative
   */
  protected AbstractIndexedListIterator(int size, int position) {
    checkPositionIndex(position, size);
    this.size = size;
    this.position = position;
  }

  @Override
  public final boolean hasNext() {
    return position < size;
  }

  @Override
  @ParametricNullness

		return bw.Sum(nil)
	}
	return nil
}

// Returns the size of the file with bitrot protection
func bitrotShardFileSize(size int64, shardSize int64, algo BitrotAlgorithm) int64 {
	if algo != HighwayHash256S {
		return size
	}
	return ceilFrac(size, shardSize)*int64(algo.New().Size()) + size
}

// bitrotVerify a single stream of data.

    }
  }

  enum Topology {
    BALANCED {
      @Override
      Optional<BinaryNode> createTree(int size, Random rng) {
        if (size == 0) {
          return Optional.absent();
        } else {
          int leftChildSize = (size - 1) / 2;
          int rightChildSize = size - 1 - leftChildSize;
          return Optional.of(
              new BinaryNode(

   *     size}
   * @throws IllegalArgumentException if {@code size} is negative
   */
  protected AbstractIndexedListIterator(int size, int position) {
    checkPositionIndex(position, size);
    this.size = size;
    this.position = position;
  }

  @Override
  public final boolean hasNext() {
    return position < size;
  }

  @Override
  @ParametricNullness

	}

	putObjectTar := func(reader io.Reader, info os.FileInfo, object string) error {
		size := info.Size()

		metadata := map[string]string{
			xhttp.AmzStorageClass: sc, // save same storage-class as incoming stream.
		}

		actualSize := size
		var idxCb func() []byte
		if isCompressible(r.Header, object) && size > minCompressibleSize {
			// Storing the compression metadata.

      return Collections.unmodifiableList(runningSyncCalls + runningAsyncCalls.map { it.call })
    }

  fun queuedCallsCount(): Int = this.withLock { readyAsyncCalls.size }

  fun runningCallsCount(): Int = this.withLock { runningAsyncCalls.size + runningSyncCalls.size }

  @JvmName("-deprecated_executorService")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "executorService"),

            .firstOrNull { ktCtor ->
                val sameName = ktCtor.containingClassOrObject?.fqName?.asString() == classFqName
                val sameParamCount = ktCtor.valueParameters.size == ctorParamTypes.size
                val sameParamTypes = sameParamCount && ctorParamTypes.mapIndexed { idx, paramType -> paramType.endsWith(ktCtor.valueParameters[idx].typeReference!!.text) }.all { it }

    int numGoodQueries = (int) (numQueries * hitRate + 0.5);

    // add good queries
    int size = elementsInSet.size();
    if (size > 0) {
      int minCopiesOfEachGoodQuery = numGoodQueries / size;
      int extras = numGoodQueries % size;

      for (int i = 0; i < minCopiesOfEachGoodQuery; i++) {
        queryList.addAll(elementsInSet);
      }
      List<Element> tmp = Lists.newArrayList(elementsInSet);
      shuffle(tmp, random);

    type: str = "car"


class PlaneItem(BaseItem):
    type: str = "plane"
    size: int


items = {
    "item1": {"description": "All my friends drive a low rider", "type": "car"},
    "item2": {
        "description": "Music is my aeroplane, it's my aeroplane",
        "type": "plane",
        "size": 5,
    },
}


@app.get("/items/{item_id}", response_model=Union[PlaneItem, CarItem])