code: def update_output(set_progress, _n_clicks, value):
      for i in range(4):
          set_progress(f"Progress {i}/4")
          time.sleep(2)
      return f"Result for '{value}'"
  
imports: from dash import Dash, Input, State, Output, dcc, html
  import time
  from multiprocessing import Value
  from tests.integration.long_callback.utils import get_long_callback_manager
label_desc: Use image node_id 2 for calling a global function with example usage: update_output(set_progress, _n_clicks, value) and returns: str, value, str