code: def _unlock_task(self, task_id):
      task = db.Tasks.query.get(task_id)
      if task is not None:
          task.alive_time = None
          db.session.commit()
  
file_path: mindsdb/mindsdb/interfaces/tasks/task_monitor.py
imports: import datetime
  import os
  import socket
  import time
  import sqlalchemy
  from mindsdb.interfaces.storage import db
  from mindsdb.utilities import log
  from mindsdb.utilities.config import Config
  from .task_thread import TaskThread
label_desc: Use image node_id 7 for calling the TaskMonitor obj's underlying member method code with example usage: obj._unlock_task(task_id) without return types