* found, the existing values are replaced.
 */
internal fun Headers.Builder.commonSet(
  name: String,
  value: String,
) = apply {
  headersCheckName(name)
  headersCheckValue(value, name)
  removeAll(name)
  commonAddLenient(name, value)
}

/** Equivalent to `build().get(name)`, but potentially faster. */
internal fun Headers.Builder.commonGet(name: String): String? {

 *
 * <p>The collections returned by {@link #keySet()} and {@link #asMap()} iterate through the keys in
 * the order they were first added to the multimap. Similarly, {@link #get}, {@link #removeAll}, and
 * {@link #replaceValues} return collections that iterate through the values in the order they were
 * added. The collections generated by {@link #entries()}, {@link #keys()}, and {@link #values}

      return standardContainsAll(collection);
    }

    @Override
    public boolean remove(Object object) {
      return standardRemove(object);
    }

    @Override
    public boolean removeAll(Collection<?> collection) {
      return standardRemoveAll(collection);
    }

    @Override
    public boolean retainAll(Collection<?> collection) {
      return standardRetainAll(collection);
    }

  fun setHeader(
    name: String,
    value: Any,
  ) = apply {
    removeHeader(name)
    addHeader(name, value)
  }

  fun removeHeader(name: String) =
    apply {
      headersBuilder.removeAll(name)
    }

  fun getBody(): Buffer? = body?.clone()

  fun setBody(body: Buffer) =
    apply {
      setHeader("Content-Length", body.size)
      this.body = body.clone() // Defensive copy.
    }

func TestDoesPresignedSignatureMatch(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()

	obj, fsDir, err := prepareFS(ctx)
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(fsDir)
	if err = newTestConfig(globalMinioDefaultRegion, obj); err != nil {
		t.Fatal(err)
	}

	// sha256 hash of "payload"
	payloadSHA256 := "239f59ed55e737c77147cf55ad0c1b030b6d7ee748a7426952f9b852d5a935e5"

    return expected;
  }

  private RangeSet<Integer> expectedComplement(RangeSet<Integer> rangeSet) {
    RangeSet<Integer> expected = TreeRangeSet.create();
    expected.add(Range.<Integer>all());
    expected.removeAll(rangeSet);
    return expected;
  }


  public void testSubRangeSet() {
    for (Range<Integer> range1 : QUERY_RANGES) {
      for (Range<Integer> range2 : QUERY_RANGES) {

		},
		{
			name: "rootfile3",
			size: 1000,
		},
		{
			name: "dir1/dira/dirasub/fileindira2",
			size: 200,
		},
	}
	createUsageTestFiles(t, base, bucket, files)
	err = os.RemoveAll(filepath.Join(base, bucket, "dir1/dira/dirasub/dcfile"))
	if err != nil {
		t.Fatal(err)
	}
	// Changed dir must be picked up in this many cycles.
	for range dataUsageUpdateDirCycles {

   */
  @CanIgnoreReturnValue
  public static boolean removeAll(Iterable<?> removeFrom, Collection<?> elementsToRemove) {
    return (removeFrom instanceof Collection)
        ? ((Collection<?>) removeFrom).removeAll(checkNotNull(elementsToRemove))
        : Iterators.removeAll(removeFrom.iterator(), elementsToRemove);
  }

  /**

 * value and the old value.
 *
 * <p>Keys and values may be null. All optional multimap methods are supported, and all returned
 * views are modifiable.
 *
 * <p>The lists returned by {@link #get}, {@link #removeAll}, and {@link #replaceValues} all
 * implement {@link java.util.RandomAccess}.
 *
 * <p>This class is not threadsafe when any concurrent operations update the multimap. Concurrent

func TestIsValidLocationConstraint(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()

	obj, fsDir, err := prepareFS(ctx)
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(fsDir)
	if err = newTestConfig(globalMinioDefaultRegion, obj); err != nil {
		t.Fatal(err)
	}

	// Corrupted XML
	malformedReq := &http.Request{
		Body:          io.NopCloser(bytes.NewReader([]byte("<>"))),