class_docstr: Manage background execution of callbacks with a celery queue.
class_docstr_tok: ["Manage","background","execution","of","callbacks","with","a","celery","queue","."]
code: def make_job_fn(self, fn, progress, key=None):
      return _make_job_fn(fn, self.handle, progress, key)
  
imports: import json
  import traceback
  from contextvars import copy_context
  from _plotly_utils.utils import PlotlyJSONEncoder
  from dash._callback_context import context_value
  from dash._utils import AttributeDict
  from dash.exceptions import PreventUpdate
  from dash.long_callback.managers import BaseLongCallbackManager
label_desc: Use image node_id 5 for calling the CeleryManager obj's underlying member method code with example usage: obj.make_job_fn(fn, progress, key) and returns: _make_job_fn