code: public static String readStringFromRaw(Context context, int resId) throws IOException {
          if (context == null) {
              return null;
          }
  
          StringBuilder s = new StringBuilder();
          InputStreamReader in = new InputStreamReader(context.getResources().openRawResource(resId));
          BufferedReader br = new BufferedReader(in);
          String line;
          while ((line = br.readLine()) != null) {
              s.append(line);
          }
          return s.toString();
      }
docs: get content from a raw resource. This can only be used with resources whose value is the name of an
  asset files -- that is, it can be used to open drawable, sound, and raw resources; it will fail on string and
  color resources.
  
  @param context
  @param resId   The resource identifier to open, as generated by the appt tool.
  @return