code: def add_with_delay(self, a, b, delay=1):
      # delay for 1 seconds
      time.sleep(1)
      return a + b
  
file_path: fiber/tests/test_managers.py
imports: import fiber
  import time
  import pytest
  import docker
  from fiber.managers import AsyncManager
label_desc: Use image node_id 2 for calling the Calculator obj's underlying member method code with example usage: obj.add_with_delay(a, b, delay) and returns: unknown