code: def to_json(self):
      return {"sanitizable": True}
  
imports: from datetime import timedelta
  import sys
  from collections import OrderedDict
  import pytest
  import torch
  from allennlp.common import util
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.common.util import push_python_path
label_desc: Use image node_id 1 for calling the Sanitizable obj's underlying member method code with example usage: obj.to_json() and returns: dict