code: def test_root_endpoint_not_supported(client):
      """Tests that the server return a 404 when accessing trials/ with no experiment"""
      response = client.simulate_get("/trials")
  
      assert response.status == "404 Not Found"
      if falcon.__version__ < "3.0.0":
          assert not response.json
      else:
          assert response.json == {"title": "404 Not Found"}
  
imports: import copy
  import datetime
  import random
  import falcon
  from orion.core.io import experiment_builder
  from orion.core.worker.trial import Trial
label_desc: Use image node_id 3 for calling a global function with example usage: test_root_endpoint_not_supported(client) without return types