docs: public static String readStringFromAssets(Context context, String fileName) throws IOException {
          if (context == null || StringUtils.isEmpty(fileName)) {
              return null;
          }
  
          StringBuilder s = new StringBuilder("");
          InputStreamReader in = new InputStreamReader(context.getResources().getAssets().open(fileName));
          BufferedReader br = new BufferedReader(in);
          String line;
          while ((line = br.readLine()) != null) {
              s.append(line);
          }
          return s.toString();
      }