code: def fibonacci(a, i):
      if i < 2:
          return 1
      f1 = fibonacci.remote(a, i - 1)
      f2 = fibonacci.remote(a, i - 2)
      return ray.get(a.add.remote(f1, f2))
  
file_path: ray/python/ray/tests/test_actor_bounded_threads.py
imports: import sys
  import os
  import ray
  import logging
  from typing import Dict
  from collections import Counter
  import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: fibonacci(a, i) and returns: ray, int