code: def test_prod_echo():
      # If we're echoing the prompt, make sure we're getting the same thing back
      prompt = "I like pickles."
      for model in prod_models:
          request = Request(
              prompt=prompt,
              model=model,
              max_tokens=0,
              num_completions=1,
              echo_prompt=True,
          )
          helper_prod_test_service(request, prompt)
  
imports: import copy
  import pytest
  import shutil
  import tempfile
  from helm.common.authentication import Authentication
  from helm.common.request import Request
  from helm.proxy.accounts import AuthenticationError, Accounts
  from helm.proxy.query import Query
  from .server_service import ServerService
label_desc: Use image node_id 5 for calling a global function with example usage: test_prod_echo() without return types