code: def app_info():
      instance: MONAILabelApp = app_instance()
      return instance.info()
  
imports: from fastapi import APIRouter, Depends
  from monailabel.config import RBAC_USER, settings
  from monailabel.endpoints.user.auth import RBAC, User
  from monailabel.interfaces.app import MONAILabelApp
  from monailabel.interfaces.utils.app import app_instance
label_desc: Use image node_id 1 for calling a global function with example usage: app_info() and returns: instance