this.mimeType = mimeType;
        return this;
    }

    /**
     * Sets the filename of the content to extract.
     *
     * @param filename the filename to set
     * @return this builder instance for method chaining
     */
    public ExtractorBuilder filename(final String filename) {
        this.filename = filename;
        return this;
    }

    /**
     * Sets the name of the extractor to use.

    }

    /**
     * Extracts text from an embedded file using the appropriate extractor.
     * @param filename the filename of the embedded file
     * @param embeddedFile the embedded file to extract text from
     * @param writer the writer to append extracted text to
     */
    protected void extractFile(final String filename, final PDEmbeddedFile embeddedFile, final StringWriter writer) {

        final ExtractorFactory extractorFactory = getExtractorFactory();
        try {
            final String filename = getDecodeText(bodyPart.getFileName());
            final String mimeType = mimeTypeHelper.getContentType(null, filename);
            if (mimeType != null) {
                final Extractor extractor = extractorFactory.getExtractor(mimeType);
                if (extractor != null) {

                        if (i + 1 == queries.length && prefixQuery) {
                            readingQueryBuilder.should(QueryBuilders.prefixQuery(fieldName, reading));
                        } else {
                            readingQueryBuilder.should(QueryBuilders.termQuery(fieldName, reading));
                        }
                    }
                    readingList.clear();

    }

    /**
     * Get field values.
     * @param document Document
     * @param fieldName Field name
     * @return Field values
     */
    protected String[] getFieldValues(final Map<String, Object> document, final String fieldName) {
        final Object value = document.get(fieldName);
        if (value instanceof String) {
            return new String[] { value.toString() };
        }