code: def is_closed(self):
      return self.closed
  
imports: import logging
  import re
  import sqlite3
  import threading
  from time import sleep
  import json
  from datetime import datetime
  from .AbstractConnector import AbstractConnector
label_desc: Use image node_id 6 for calling the SQLiteConnector obj's underlying member method code with example usage: obj.is_closed() and returns: self