return nil
	}

	if seeker, ok := r.r.(io.Seeker); ok {
		r.blockOffset += int64(relativeOffset)
		// Implementations of Seeker do not always detect invalid offsets,
		// so check that the new offset is valid by comparing to the end.
		prev, err := seeker.Seek(0, io.SeekCurrent)
		if err != nil {
			return r.wrapError(0, err)
		}
		end, err := seeker.Seek(0, io.SeekEnd)
		if err != nil {

// served by the [FileServer] implementation.
//
// The methods should behave the same as those on an [*os.File].
type File interface {
	io.Closer
	io.Reader
	io.Seeker
	Readdir(count int) ([]fs.FileInfo, error)
	Stat() (fs.FileInfo, error)
}

type anyDirs interface {
	len() int
	name(i int) string
	isDir(i int) bool
}

type fileInfoDirs []fs.FileInfo

                                test("throwsExceptionWhenPeeked()") {
                                    operationDisplayName "throws EmptyStackException when peeked"
                                    testDisplayName "throws EmptyStackException when peeked"
                                }
                                test("throwsExceptionWhenPopped()") {

type ReadSeeker interface {
	Reader
	Seeker
}

// ReadSeekCloser is the interface that groups the basic Read, Seek and Close
// methods.
type ReadSeekCloser interface {
	Reader
	Seeker
	Closer
}

// WriteSeeker is the interface that groups the basic Write and Seek methods.
type WriteSeeker interface {
	Writer
	Seeker
}

	nodeEXCL   = constants.Get("O_EXCL").Int()
)

type jsFile struct {
	path    string
	entries []string
	dirIdx  int // entries[:dirIdx] have already been returned in ReadDirent
	pos     int64
	seeked  bool
}

var filesMu sync.Mutex
var files = map[int]*jsFile{
	0: {},
	1: {},
	2: {},
}

func fdToFile(fd int) (*jsFile, error) {
	filesMu.Lock()
	f, ok := files[fd]
	filesMu.Unlock()

   * a modest limit on `byteCount`, such as 1 MiB.
   */
  @Throws(IOException::class)
  fun peekBody(byteCount: Long): ResponseBody {
    val peeked = body.source().peek()
    val buffer = Buffer()
    peeked.request(byteCount)
    buffer.write(peeked, minOf(byteCount, peeked.buffer.size))
    return buffer.asResponseBody(body.contentType(), buffer.size)
  }

  @JvmName("-deprecated_body")
  @Deprecated(

        def cycle = new Tree(value: "cycle", left: new Tree(value: "left"))
        cycle.right = cycle
        task.nested = new Tree(value: "first", left: new Tree(value: "left"), right: new Tree(value: "deeper", left: cycle, right: new Tree(value: "no-cycle")))

        when:
        visitProperties(task)

        then:
        _ * visitor.visitNested() >> true

		jdir, _, _ := split(files[j].name)
		return jdir > dir
	})
	return files[i:j]
}

// Open opens the named file for reading and returns it as an [fs.File].
//
// The returned file implements [io.Seeker] and [io.ReaderAt] when the file is not a directory.
func (f FS) Open(name string) (fs.File, error) {
	file := f.lookup(name)
	if file == nil {
		return nil, &fs.PathError{Op: "open", Path: name, Err: fs.ErrNotExist}
	}

	// io.CopyN done shortly afterwards to trigger any IO errors.
	var seekSkipped int64 // Number of bytes skipped via Seek
	if sr, ok := r.(io.Seeker); ok && n > 1 {
		// Not all io.Seeker can actually Seek. For example, os.Stdin implements
		// io.Seeker, but calling Seek always returns an error and performs
		// no action. Thus, we try an innocent seek to the current position
		// to see if Seek is really supported.

HTMLReader.SpecialAction action = null
""",
            "javax.swing.text.html.HTMLDocument.HTMLReader.SpecialAction action = null",
            """
class Outer {
    class Inner {
         class Deeper {
         }
    }
}
Outer.Inner.Deeper weMustGoDeeper = null
"""
        ]
    }

    private void checkScriptClassesInCache(boolean empty = false) {
        assertTrue(scriptCacheDir.isDirectory())