code: def test_create_empty_keypoints():
      kpts = slc.Keypoints()
      assert kpts.height is None
      assert kpts.width is None
      assert kpts.data is None
  
imports: import itertools
  import random
  import cv2
  import numpy
  import pytest
  import torch
  import solt.core
  import solt.transforms
  import solt.utils
  from .fixtures import *
label_desc: Use image node_id 14 for calling a global function with example usage: test_create_empty_keypoints() without return types