code: def echo_delay(
      self, input_datas: dict[str, t.Any]
  ) -> JSONSerializable:
      delay = input_datas.get("delay", 5)
      time.sleep(delay)
      return input_datas
  
file_path: BentoML/tests/e2e/bento_server_http/pickle_model.py
imports: from __future__ import annotations
  import time
  import typing
  from typing import TYPE_CHECKING
  import numpy
  import pandas
label_desc: Use image node_id 4 for calling the PickleModel obj's underlying member method code with example usage: obj.echo_delay(input_datas) and returns: input_datas