}

    static int readn(final InputStream in, final byte[] b, final int off, final int len) throws IOException {
        int i = 0, n;

        while (i < len) {
            n = in.read(b, off + i, len - i);
            if (n <= 0) {
                break;
            }
            i += n;
        }

        return i;
    }

 * try (ContentCache cache = new ContentCache(data)) {
 *     InputStream inputStream = cache.getInputStream();
 *     // Read from inputStream
 * }
 *
 * // File-based caching
 * File file = new File("example.txt");
 * try (ContentCache cache = new ContentCache(file)) {
 *     InputStream inputStream = cache.getInputStream();
 *     // Read from inputStream
 * }
 * }
 * </pre>
 *
 */

    void availableReturnsUnderlyingWhenNoMessage() throws IOException {
        // Mock input stream that reports available bytes
        InputStream mockIn = mock(InputStream.class);
        when(mockIn.available()).thenReturn(42);

        SocketInputStream sis = new SocketInputStream(mockIn);

        // When no message is buffered, should return underlying stream's available

    byte[] big = newPreFilledByteArray(5);
    InputStream bin = new ByteArrayInputStream(big);
    InputStream lin = ByteStreams.limit(bin, 2);

    IOException expected = assertThrows(IOException.class, lin::reset);
    assertThat(expected).hasMessageThat().isEqualTo("Mark not set");
  }

  public void testLimit_markNotSupported() {
    InputStream lin = ByteStreams.limit(new UnmarkableInputStream(), 2);

    }

    // Test reload with InputStream
    @Test
    public void test_reload_withComments() {
        String content = "# This is a comment\n" + "word1\n" + "\n" + // empty line
                "word2\n" + "# Another comment\n" + "word3\n";

        InputStream is = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));

            .collect(Collectors.toList());
    }

    private static Future<String> readStreamAsync(InputStream inputStream) {
        return THREAD_POOL.submit((Callable<String>) () -> readFully(inputStream));
    }

    private static String readFully(InputStream inputStream) throws IOException {
        try (InputStream in = inputStream; ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            byte[] buffer = new byte[8192];

    val inputStream = connection.getInputStream()
    assertThat(inputStream.read()).isEqualTo('A'.code)
    assertThat(inputStream.read()).isEqualTo('B'.code)
    assertThat(inputStream.read()).isEqualTo('C'.code)
    assertThat(inputStream.read()).isEqualTo('D'.code)
    assertThat(inputStream.read()).isEqualTo('E'.code)
    assertThat(inputStream.read()).isEqualTo('F'.code)

     * Uploads an object to storage.
     *
     * @param objectName the name/path for the object
     * @param inputStream the input stream of data to upload
     * @param size the size of the data in bytes
     * @param contentType the MIME type of the content
     */
    void uploadObject(String objectName, InputStream inputStream, long size, String contentType);

    /**
     * Downloads an object from storage.
     *

    }

    @Override
    public InputStream openStream() throws IOException {
      return sliceStream(ByteSource.this.openStream());
    }

    @Override
    public InputStream openBufferedStream() throws IOException {
      return sliceStream(ByteSource.this.openBufferedStream());
    }

    private InputStream sliceStream(InputStream in) throws IOException {
      if (offset > 0) {

        }
    }

    private static class StreamGobbler implements Runnable {
        private final InputStream inputStream;
        private final Consumer<String> consumer;

        private StreamGobbler(InputStream inputStream, Consumer<String> consumer) {
            this.inputStream = inputStream;
            this.consumer = consumer;
        }

        @Override
        public void run() {