code: def __call__(self, task):
      # type: (Task) -> bool
      if self.include:
          return task.data.user not in self.include
      return task.data.user in self.exclude
  
file_path: clearml/examples/services/monitoring/slack_alerts.py
imports: import argparse
  import os
  from pathlib import Path
  from time import sleep
  from typing import Optional, Callable, List, Union
  from slack_sdk import WebClient
  from slack_sdk.errors import SlackApiError
  from clearml import Task
  from clearml.automation.monitor import Monitor
label_desc: Use image node_id 2 for calling the UserFilter obj's underlying member method code with example usage: obj.__call__(task) and returns: unknown, unknown