code: def test_tag_interface():
      t = JSONTag(None)
      pytest.raises(NotImplementedError, t.check, None)
      pytest.raises(NotImplementedError, t.to_json, None)
      pytest.raises(NotImplementedError, t.to_python, None)
  
file_path: flask/tests/test_json_tag.py
imports: from datetime import datetime
  from datetime import timezone
  from uuid import uuid4
  import pytest
  from markupsafe import Markup
  from flask.json.tag import JSONTag
  from flask.json.tag import TaggedJSONSerializer
label_desc: Use image node_id 4 for calling a global function with example usage: test_tag_interface() without return types