docs: public static Map<String, String> getContentMap(File file, String separator) throws IOException {
      List<String> content = getContentLines(file);
      Map<String, String> map = new LinkedHashMap<String, String>();
        
      for (String line : content) {
        String[] spl = line.split(separator);
        if (line.trim().length() > 0) {
          map.put(spl[0], (spl.length > 1 ? spl[1] : ""));
        }
      }
      
      return map;
    }