code: def test_dict(self):
      assert_json_serializable({})
      assert_json_serializable({"a": 1})
      assert_json_serializable({"a": 1, "b": 2})
      assert_json_serializable({"a": 1, "b": "b", "c": True, "d": None})
  
imports: from graphistry.utils.json import assert_json_serializable
label_desc: Use image node_id 3 for calling the TestAssertJsonSerializable obj's underlying member method code with example usage: obj.test_dict() without return types