*/
    public static String getXContentString(final ToXContent xContent, final MediaType mediaType) {
        try {
            return XContentHelper.toXContent(xContent, mediaType, ToXContent.EMPTY_PARAMS, false).utf8ToString();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Functional interface for building XContent with custom logic.

                rangeQuery.gte(min.utf8ToString());
            } else {
                rangeQuery.gt(min.utf8ToString());
            }
        }
        final BytesRef max = termRangeQuery.getUpperTerm();
        if (max != null) {
            if (termRangeQuery.includesUpper()) {
                rangeQuery.lte(max.utf8ToString());
            } else {