_ = x[ErrUnsignedHeaders-100]
	_ = x[ErrMissingDateHeader-101]
	_ = x[ErrInvalidQuerySignatureAlgo-102]
	_ = x[ErrInvalidQueryParams-103]
	_ = x[ErrBucketAlreadyOwnedByYou-104]
	_ = x[ErrInvalidDuration-105]
	_ = x[ErrBucketAlreadyExists-106]
	_ = x[ErrMetadataTooLarge-107]
	_ = x[ErrUnsupportedMetadata-108]
	_ = x[ErrUnsupportedHostHeader-109]
	_ = x[ErrMaximumExpires-110]
	_ = x[ErrSlowDownRead-111]

    List<Integer> list = newArrayList(1, 1, 1, 1, 2, 2, 3);
    Collection<List<Integer>> permutations =
        Collections2.orderedPermutations(list, Ordering.natural());

    assertPermutationsCount(105, permutations);
  }

  public void testOrderedPermutationSetSizeOverflow() {
    // 12 elements won't overflow
    assertEquals(
        479001600 /*12!*/,

                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="105" y="-280" as="sourcePoint"/>
                        <mxPoint x="390" y="-260" as="targetPoint"/>
                        <Array as="points">
                            <mxPoint x="390" y="-430"/>

## 複数のパスパラメータとクエリパラメータ

複数のパスパラメータとクエリパラメータを同時に宣言できます。**FastAPI**は互いを区別できます。

そして特定の順序で宣言しなくてもよいです。

名前で判別されます:

```Python hl_lines="8  10"
{!../../docs_src/query_params/tutorial004.py!}
```

## 必須のクエリパラメータ

パスパラメータ以外のパラメータ (今のところ、クエリパラメータのみ説明しました) のデフォルト値を宣言した場合、そのパラメータは必須ではなくなります。

特定の値を与えずにただオプショナルにしたい場合はデフォルト値を `None` にして下さい。

    // Source of length 5
    AppendableByteSource source = new AppendableByteSource(newPreFilledByteArray(5));

    // Slice it starting at offset 10.
    ByteSource slice = source.slice(10, 5);

    // Open a stream to the slice.
    InputStream in = slice.openStream();

    // Append 10 more bytes to the source.
    source.append(newPreFilledByteArray(5, 10));

                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="105" y="-280" as="sourcePoint"/>
                        <mxPoint x="390" y="-260" as="targetPoint"/>
                        <Array as="points">
                            <mxPoint x="390" y="-430"/>
                        </Array>

    List<Integer> list = newArrayList(1, 1, 1, 1, 2, 2, 3);
    Collection<List<Integer>> permutations =
        Collections2.orderedPermutations(list, Ordering.natural());

    assertPermutationsCount(105, permutations);
  }

  public void testOrderedPermutationSetSizeOverflow() {
    // 12 elements won't overflow
    assertEquals(
        479001600 /*12!*/,

        "U4.20", // #2
        "R0.00, R1.75, R1.26", // #3, after that the rate changes
        "R0.76", // #4, this is what the throttling would be with the old rate
        "R0.20, R0.10, R0.10, R0.10", // #5
        "U4.10", // #6
        "R0.00, R0.94, R0.81, R0.69, R0.57, R0.44, R0.32", // #7
        "R0.20, R0.10, R0.10, R0.10"); // #7 (cont.), note, this matches #5
  }

  public void testBurstyAndUpdate() {

        "U4.20", // #2
        "R0.00, R1.75, R1.26", // #3, after that the rate changes
        "R0.76", // #4, this is what the throttling would be with the old rate
        "R0.20, R0.10, R0.10, R0.10", // #5
        "U4.10", // #6
        "R0.00, R0.94, R0.81, R0.69, R0.57, R0.44, R0.32", // #7
        "R0.20, R0.10, R0.10, R0.10"); // #7 (cont.), note, this matches #5
  }

  public void testBurstyAndUpdate() {

// Provide a block size that affects latency. If 0 a default of 128KiB will be used.
// Block size can be up to 4MiB.
func newMetacacheWriter(out io.Writer, blockSize int) *metacacheWriter {
	if blockSize < 8<<10 {
		blockSize = 128 << 10
	}
	w := metacacheWriter{
		mw:        nil,
		blockSize: blockSize,
	}
	w.creator = func() error {
		s2w := s2.NewWriter(out, s2.WriterBlockSize(blockSize), s2.WriterConcurrency(2))