docs: public static String readTextFile(Context context, String asset) {
          try {
              InputStream inputStream = context.getAssets().open(asset);
              return org.gearvrf.utility.TextFile.readTextFile(inputStream);
          } catch (FileNotFoundException f) {
              Log.w(TAG, "readTextFile(): asset file '%s' doesn't exist", asset);
          } catch (IOException e) {
              e.printStackTrace();
              Log.e(TAG, e, "readTextFile()");
          }
          return null;
      }