code: public static JSONObject loadPublicJSONFile(final String publicDirectory, final String file) {
          final File dir = Environment.getExternalStoragePublicDirectory(publicDirectory);
          return loadJSONFile(dir, file);
      }
docs: Load a JSON file from one of the public directories defined by {@link Environment}.
  
  @param publicDirectory One of the {@code DIRECTORY_*} constants defined by {@code Environment}.
  @param file            Relative path to file in the public directory.
  @return New instance of {@link JSONObject}