code: def test_system_environment_context_tags(monkeypatch):
      monkeypatch.setenv("MLFLOW_RUN_CONTEXT", '{"A": "B", "C": "D"}')
      assert SystemEnvironmentContext().tags() == {"A": "B", "C": "D"}
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_system_environment_context_tags(monkeypatch) without return types