code: def downloader(image_url: str):
      image_bytes = requests.get(image_url).content
      image = Image.open(BytesIO(image_bytes)).convert("RGB")
      return image
  
file_path: ray/doc/source/serve/doc_code/image_classifier_example.py
imports: import requests
  import starlette
  from transformers import pipeline
  from io import BytesIO
  from PIL import Image
  from ray import serve
  from ray.serve.handle import DeploymentHandle
  from translator_example import app
label_desc: Use image node_id 1 for calling a global function with example usage: downloader(image_url) and returns: image