code: def get_resource_type(self):
      self.cursor.execute("SELECT DISTINCT type from resource;")
      return [i[0] for i in self.cursor.fetchall()]
  
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 18 for calling the SQLiteConnector obj's underlying member method code with example usage: obj.get_resource_type() and returns: unknown