code: def test_segment3(self):
      results = self.module.segment(
          images=[cv2.imread("tests/test.jpg")],
          use_gpu=False,
          visualization=True,
      )
      self.assertIsInstance(results[0]["data"], np.ndarray)
  
imports: import os
  import shutil
  import unittest
  import cv2
  import numpy
  import requests
  import paddlehub
label_desc: Use image node_id 5 for calling the TestHubModule obj's underlying member method code with example usage: obj.test_segment3() without return types