code: def call_job_fn(self, key, job_fn, args, context):
      raise NotImplementedError
  
file_path: dash/dash/long_callback/managers/__init__.py
imports: from abc import ABC
  import inspect
  import hashlib
label_desc: Use image node_id 6 for calling the BaseLongCallbackManager obj's underlying member method code with example usage: obj.call_job_fn(key, job_fn, args, context) without return types