* `write(data)`: Writes `data` (`str` or `bytes`) to the file.
* `read(size)`: Reads `size` (`int`) bytes/characters of the file.
* `seek(offset)`: Goes to the byte position `offset` (`int`) in the file.
    * E.g., `await myfile.seek(0)` would go to the start of the file.
    * This is especially useful if you run `await myfile.read()` once and then need to read the contents again.
* `close()`: Closes the file.

	}
	err = enc.Close()
	if err != nil {
		return err
	}
	return nil
}

// deserialize the supplied byte slice into the cache.
func (d *dataUsageCache) deserialize(r io.Reader) error {
	var b [1]byte
	n, _ := r.Read(b[:])
	if n != 1 {
		return io.ErrUnexpectedEOF
	}
	ver := int(b[0])
	switch ver {
	case dataUsageCacheVerV1:
		return errors.New("cache version deprecated (will autoupdate)")

details can be found in the [DNS README](https://github.com/kubernetes/kubernetes/blob/release-1.2/cluster/saltbase/salt/kube-dns/README.md#a-records-and-hostname-based-on-pod-annotations---a-beta-feature-in-kubernetes-v12). Changes were introduced in PR [#20688](https://github.com/kubernetes/kubernetes/pull/20688).

     * just to be safe.
     *
     * The real purpose of this test is to produce a TSAN failure if MapIteratorCache is unsafe for
     * reads from multiple threads -- unsafe, in fact, even in the absence of a concurrent write.
     * The specific problem we had was unsafe reads of lastEntryReturnedBySomeIterator. (To fix the
     * problem, we've since marked that field as volatile.)
     *

	if err != nil {
		return
	}

	outbuf := bytes.NewBuffer(nil)
	objectKey := crypto.GenerateKey(key.Plaintext, rand.Reader)
	sealedKey := objectKey.Seal(key.Plaintext, crypto.GenerateIV(rand.Reader), crypto.S3.String(), bucket, "")
	crypto.S3.CreateMetadata(metadata, key.KeyID, key.Ciphertext, sealedKey)

	if err != nil {
		return 0, nil, err
	}
	n = info.Size - offset
	return n, obj, nil
}

// PutFile implements ftpDriver
func (driver *ftpDriver) PutFile(ctx *ftp.Context, objPath string, data io.Reader, offset int64) (n int64, err error) {
	stopFn := globalFtpMetrics.log(ctx, objPath)
	defer stopFn(n, err)

	bucket, object := path2BucketObject(objPath)
	if bucket == "" {

	fmt.Fprintln(banner, color.Blue("Version:")+color.Bold(" %s (%s %s/%s)", ReleaseTag, runtime.Version(), runtime.GOOS, runtime.GOARCH))
}

func versionBanner(c *cli.Context) io.Reader {
	banner := &strings.Builder{}
	fmt.Fprintln(banner, color.Bold("%s version %s (commit-id=%s)", c.App.Name, c.App.Version, CommitID))

	}

	// Verify 'Content-Md5' and/or 'X-Amz-Content-Sha256' if present.
	// The verification happens implicit during reading.
	reader, err := hash.NewReader(ctx, r.Body, -1, clientETag.String(), hex.EncodeToString(contentSHA256), -1)
	if err != nil {
		return toAPIErrorCode(ctx, err)
	}
	r.Body = reader
	return ErrNone
}

// List of all support S3 auth types.
var supportedS3AuthTypes = map[authType]struct{}{

    @Nested
    @DisplayName("Integration Tests")
    class IntegrationTests {

        @Test
        @DisplayName("Should maintain state after multiple reads")
        void testMultipleReads() throws SMBProtocolDecodingException {
            // First read
            byte[] buffer1 = createValidWriteResponse(1024, 512);
            response.readBytesWireFormat(buffer1, 0);
            assertEquals(1024, response.getCount());

            return teminated;
        }
    }

    /**
     * Thread that reads input stream data and buffers it for later retrieval.
     * Captures output from command execution with configurable line buffering.
     */
    protected static class InputStreamThread extends Thread {

        /** Buffered reader for input stream. */
        private BufferedReader br;