code: def get_backend(backend: str) -> OCIBuilder:
      ...
  
imports: from __future__ import annotations
  import contextlib
  import importlib
  import logging
  import os
  import sys
  import types
  import typing
  from typing import TYPE_CHECKING
  import fs
  import fs.mirror
  from simple_di import Provide
  from simple_di import inject
  from ...exceptions import InvalidArgument
  from ..configuration.containers import BentoMLContainer
  from ..utils import bentoml_cattr
  from .base import OCIBuilder
  from .generate import generate_containerfile
label_desc: Use image node_id 11 for calling a global function with example usage: get_backend(backend) without return types