code: def test_str(self) -> None:
      prop = bcpj.JSON()
      assert str(prop) == "JSON"
  
file_path: bokeh/tests/unit/bokeh/core/property/test_json__property.py
imports: from __future__ import annotations
  import pytest
  from tests.support.util.api import verify_all
  from _util_property import _TestHasProps, _TestModel
  import bokeh.core.property.json
label_desc: Use image node_id 4 for calling the Test_JSON obj's underlying member method code with example usage: obj.test_str() without return types