String ext;
            if (outputExtension == null) {
                if (StringUtil.isNotBlank(extention)) {
                    ext = "." + extention;
                } else {
                    ext = extention;
                }
            } else {
                ext = outputExtension;
            }

        }
    }

    /**
     * Gets the extractor for the specified file extension.
     *
     * @param ext the file extension
     * @return the extractor for the extension, or null if not found
     */
    private Extractor getExtractor(final String ext) {
        return extractorMap.get(ext);
    }

    /**
     * Gets the output extension for the specified input extension.
     *