class_docstr: Test CLIP4Clip model
code: def test_convert_tokens_to_id(self):
      tokenizer = SimpleTokenizer()
      text = "kids feeding and playing with the horse"
      res = convert_tokens_to_id(tokenizer, text, max_words=32)
      self.assertEqual(
          res.all(),
          np.array(
              [
                  [49406, 1911, 9879, 537, 1629, 593, 518, 4558, 49407]
                  + [0] * 23
              ]
          ).all(),
      )
  
file_path: towhee/tests/unittests/models/clip4clip/test_clip4clip.py
imports: import unittest
  import torch
  import numpy
  from towhee.models.clip import SimpleTokenizer
  from towhee.models.clip4clip import convert_tokens_to_id
  from towhee.models.clip4clip import create_model
  from towhee.models import clip4clip
label_desc: Use image node_id 3 for calling the TestCLIP4Clip obj's underlying member method code with example usage: obj.test_convert_tokens_to_id() without return types