* {@code false} when you want to stop processing.
 *
 * @author Chris Nokleberg
 * @since 1.0
 */
@DoNotMock("Implement it normally")
@J2ktIncompatible
@GwtIncompatible
public interface ByteProcessor<T extends @Nullable Object> {
  /**
   * This method will be called for each chunk of bytes in an input stream. The implementation
   * should process the bytes from {@code buf[off]} through {@code buf[off + len - 1]} (inclusive).

    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

  public void testRead_withProcessor() throws IOException {
    byte[] processedBytes = new byte[bytes.length];
    ByteProcessor<byte[]> processor =
        new ByteProcessor<byte[]>() {
          int pos;

          @Override
          public boolean processBytes(byte[] buf, int off, int len) throws IOException {

    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

  public void testRead_withProcessor() throws IOException {
    byte[] processedBytes = new byte[bytes.length];
    ByteProcessor<byte[]> processor =
        new ByteProcessor<byte[]>() {
          int pos;

          @Override
          public boolean processBytes(byte[] buf, int off, int len) throws IOException {

    assertThat(Files.getNameWithoutExtension("/foo/.bar/blah")).isEqualTo("blah");
  }

  public void testReadBytes() throws IOException {
    ByteProcessor<byte[]> processor =
        new ByteProcessor<byte[]>() {
          private final ByteArrayOutputStream out = new ByteArrayOutputStream();

          @Override

              }
            }));
  }

  public void testRead_usingByteProcessor() throws IOException {
    byte[] readBytes =
        source.read(
            new ByteProcessor<byte[]>() {
              final ByteArrayOutputStream out = new ByteArrayOutputStream();

              @Override
              public boolean processBytes(byte[] buf, int off, int len) throws IOException {

    assertThat(ByteStreams.readBytes(new ByteArrayInputStream(array), new TestByteProcessor()))
        .isEqualTo(array);
  }

  private static class TestByteProcessor implements ByteProcessor<byte[]> {
    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    public boolean processBytes(byte[] buf, int off, int len) {
      out.write(buf, off, len);

    assertThat(ByteStreams.readBytes(new ByteArrayInputStream(array), new TestByteProcessor()))
        .isEqualTo(array);
  }

  private static class TestByteProcessor implements ByteProcessor<byte[]> {
    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    public boolean processBytes(byte[] buf, int off, int len) {
      out.write(buf, off, len);

              }
            }));
  }

  public void testRead_usingByteProcessor() throws IOException {
    byte[] readBytes =
        source.read(
            new ByteProcessor<byte[]>() {
              final ByteArrayOutputStream out = new ByteArrayOutputStream();

              @Override
              public boolean processBytes(byte[] buf, int off, int len) throws IOException {

   *     processor} throws an {@code IOException}
   * @since 16.0
   */
  @CanIgnoreReturnValue // some processors won't return a useful result
  @ParametricNullness
  public <T extends @Nullable Object> T read(ByteProcessor<T> processor) throws IOException {
    checkNotNull(processor);

    Closer closer = Closer.create();
    try {
      InputStream in = closer.register(openStream());

      imports = "com.google.common.io.Files")
  @CanIgnoreReturnValue // some processors won't return a useful result
  @ParametricNullness
  public
  static <T extends @Nullable Object> T readBytes(File file, ByteProcessor<T> processor)
      throws IOException {
    return asByteSource(file).read(processor);
  }

  /**
   * Computes the hash code of the {@code file} using {@code hashFunction}.
   *