code: public static void close(AssetFileDescriptor descriptor) {
          if (descriptor == null) {
              return;
          }
          try {
              descriptor.close();
          } catch (IOException e) {
              Log.e(TAG, "something went wrong on close descriptor: ", e);
          }
      }
docs: Close the descriptor, and if the exception during close will be logged.
  @param descriptor to close.