code: def __call__(self, uris: List[str]):
      return [self.utils.prepare_input_from_uri(uri) for uri in uris]
  
file_path: ray/release/serve_tests/workloads/serve_resnet_benchmark.py
imports: import os
  from typing import List, Optional
  import asyncio
  import time
  import aiohttp
  import click
  import numpy
  import starlette.requests
  import torch
  from torchvision import models
  from ray import serve
  from ray.serve.handle import DeploymentHandle
  from serve_test_utils import save_test_results
label_desc: Use image node_id 2 for calling the DataDownloader obj's underlying member method code with example usage: obj.__call__(uris) and returns: unknown