}
BookProcessorPipeline epubCleaner = new DefaultBookProcessorPipeline();
epubCleaner.addBookProcessors(createBookProcessors(bookProcessorClassNames));
EpubWriter epubWriter = new EpubWriter(epubCleaner);
if(! StringUtils.isBlank(xslFile)) {
epubCleaner.addBookProcessor(new XslBookProcessor(xslFile));
}
if (StringUtils.isBlank(inputEncoding)) {
inputEncoding = Constants.CHARACTER_ENCODING;
}