code: def __enter__(self):
      return ivy.with_backend(self.backend, cached=self.cached)
  
file_path: ivy/ivy_tests/test_ivy/helpers/pipeline_helper.py
imports: from enum import Enum
  from typing import Callable
  import ivy
  import importlib
label_desc: Use image node_id 2 for calling the WithBackendContext obj's underlying member method code with example usage: obj.__enter__() and returns: ivy