code: def remove_expired(self):
      count = 0
      current_ts = int(time.time())
  
      if not os.path.isdir(self.store_path):
          return count
  
      for item in os.listdir(self.store_path):
          if os.path.isdir(os.path.join(self.store_path, item)):
              session_id = item
              session_info = self.get_session(
                  session_id, update_ts=False, fetch_cache=False
              )
              expiry_ts = (
                  session_info.last_access_ts + session_info.expiry
              )
  
              if (
                  session_info
                  and session_info.expiry > 0
                  and expiry_ts < current_ts
              ):
                  logger.info(
                      f"Removing expired; current ts: {current_ts}\n{session_info.to_str()}"
                  )
                  self.remove_session(session_id)
                  count += 1
              elif session_info:
                  logger.debug(
                      "Skipped {}; current ts: {}; last ts: {}; expiry: {}".format(
                          session_id,
                          current_ts,
                          session_info.last_access_ts,
                          session_info.expiry,
                      )
                  )
              else:
                  logger.info(
                      f"Invalid session-id: {session_id} (will be removed)"
                  )
                  self.remove_session(session_id)
      return count
  
imports: import json
  import logging
  import os
  import pathlib
  import shutil
  import tempfile
  import time
  import uuid
  from typing import Dict
label_desc: Use image node_id 2 for calling the Sessions obj's underlying member method code with example usage: obj.remove_expired() and returns: count, count