cos.write(new byte[] { 0, 1, 2 });
        assertTrue(cos.isInMemory());
        cos.write(new byte[] { 3, 4 });
        assertTrue(cos.isInMemory());
        cos.write(new byte[] { 5 });
        assertTrue(cos.isInMemory());
        assertFalse(cos.done);
        cos.close();
    }

    @Test
    public void testMultipleWritesExceedingThreshold() throws IOException {

     */
    @Override
    public void close() throws IOException {
        try {
            super.close();
        } finally {
            if (!isInMemory() && !done) {
                final File file = super.getFile();
                if (file != null) {
                    try {
                        Files.deleteIfExists(file.toPath());

                }
                dfos.flush();
                final ContentCache contentCache;
                logger.fine(() -> "Response in " + (dfos.isInMemory() ? "Memory" : "File"));
                if (dfos.isInMemory()) {
                    contentCache = new ContentCache(dfos.getData());
                } else {
                    contentCache = new ContentCache(dfos.getFile());
                }

     * @return An input stream.
     * @throws IOException if an I/O error occurs.
     */
    protected InputStream getContentStream(final DeferredFileOutputStream dfos) throws IOException {
        if (dfos.isInMemory()) {
            return new ByteArrayInputStream(dfos.getData());
        }
        return new BufferedInputStream(new FileInputStream(dfos.getFile()));
    }

    /**
     * Returns a content from a writer.

                        .get()) {
                    CopyUtil.copy(responseBodyStream, dfos);
                    dfos.flush();

                    if (dfos.isInMemory()) {
                        responseData.setResponseBody(dfos.getData());
                        contentLength = dfos.getData().length;
                        if (contentType == null) {