code: def test_next_sample(self):
      try:
          c = MONAILabelClient("http://127.0.0.1:8000/")
          c.next_sample("random")
      except:
          pass
  
file_path: MONAILabel/tests/unit/client/test_client.py
imports: import unittest
  from monailabel.client import MONAILabelClient
label_desc: Use image node_id 4 for calling the TestClient obj's underlying member method code with example usage: obj.test_next_sample() without return types