code: def test_explainer_hub_client(explainer_hub_client):
      with explainer_hub_client:
          data = {
              "username": "user",
              "password": "password",
              "next": "/",
          }
          response = explainer_hub_client.post("/login/", data=data)
          assert response.status_code == 200
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_explainer_hub_client(explainer_hub_client) without return types