code: def download_url(source, target):
      """Download a url in stream mode."""
      with requests.get(source, stream=True, timeout=10) as r:
          r.raise_for_status()
          with open(target, "wb") as f:
              for chunk in r.iter_content(chunk_size=8192):
                  f.write(chunk)
  
label_desc: Use image node_id 1 for calling a global function with example usage: download_url(source, target) without return types