this.tempDir = tempDir;
    }

    /**
     * Sets the output encoding for extracted text.
     *
     * @param outputEncoding the output encoding to set
     */
    public void setOutputEncoding(final String outputEncoding) {
        this.outputEncoding = outputEncoding;
    }

        assertArgumentNotNull("out", out);
        assertArgumentNotEmpty("outputEncoding", outputEncoding);

        final Reader is = ReaderUtil.create(in, inputEncoding);
        try {
            final Writer os = WriterUtil.create(out, outputEncoding);
            try {
                return copyInternal(wrap(is), wrap(os));
            } finally {
                CloseableUtil.close(os);
            }
        } finally {

            return buf.toString();
        }

    }

    /**
     * Sets the encoding for the output.
     * @param outputEncoding The output encoding to set.
     */
    public void setOutputEncoding(final String outputEncoding) {
        this.outputEncoding = outputEncoding;
    }

    /**
     * Sets the output file extension.
     * @param outputExtension The output file extension to set.
     */

    }

    /**
     * Sets the output encoding.
     * @param outputEncoding The output encoding.
     */
    public void setOutputEncoding(final String outputEncoding) {
        this.outputEncoding = outputEncoding;
    }

    /**
     * Sets whether to read content as text if extraction fails.