code: def __call__(self, _):
      return b""
  
file_path: ray/python/ray/serve/_private/benchmarks/http_noop_latency.py
imports: import asyncio
  import logging
  import click
  import pandas
  import requests
  from ray import serve
  from ray.serve._private.benchmarks.common import run_latency_benchmark
label_desc: Use image node_id 2 for calling the Noop obj's underlying member method code with example usage: obj.__call__(_) and returns: bytes