private void initializeCaseSensitive() {
        if (caseSensitive == null) {

            String content = generateUniqueContent();
            File file = null;
            try {
                checkJavaIoTmpDirExists();
                file = createFile(content);
                caseSensitive = probeCaseSensitive(file, content);
            } catch (IOException e) {
                throw new RuntimeException(e);