class_docstr: Test ActionClip utils
code: def test_visual_prompt_weights(self):
      fake_weights1 = {"module.layer1": 1}
      new_weights1 = action_clip.map_state_dict(fake_weights1)
      self.assertTrue("layer1" in new_weights1)
  
      fake_weights2 = {"visual": {"module.layer1": 1}}
      new_weights2 = action_clip.map_state_dict(
          fake_weights2, state_dict_name="visual"
      )
      self.assertTrue("layer1" in new_weights2)
  
imports: import unittest
  import torch
  from towhee.models import action_clip
label_desc: Use image node_id 1 for calling the TestUtils obj's underlying member method code with example usage: obj.test_visual_prompt_weights() without return types