}
            return copyInternal((FileInputStream) in, wrap(out));
        }
        if (out instanceof FileOutputStream) {
            return copyInternal(wrap(in), (FileOutputStream) out);
        }
        return copyInternal(wrap(in), wrap(out));
    }

    // ////////////////////////////////////////////////////////////////
    // from InputStream to Writer

    }

    public static void writeBytes(final String pathname, final byte[] bytes) {
        try (FileOutputStream fos = OutputStreamUtil.create(new File(pathname))) {
            ChannelUtil.write(fos.getChannel(), ByteBuffer.wrap(bytes));
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    public static void deleteInBackground(final File file) {
        if (file != null) {