code: def write_catalog(target, files):
      with target.open("w", encoding="utf-8") as cat:
          cat.write(CATALOG_TEMPLATE.format(target=target))
          cat.writelines(
              "<HASH>{}={}\n".format(n, f)
              for n, f in files
              if can_sign(f)
          )
  
label_desc: Use image node_id 3 for calling a global function with example usage: write_catalog(target, files) without return types