code: def as_cuda(stream: AbstractStream) -> torch.cuda.Stream:
      """Casts the given stream as :class:`torch.cuda.Stream`."""
      return cast(torch.cuda.Stream, stream)
  
file_path: pytorch/torch/distributed/pipeline/sync/stream.py
imports: from contextlib import contextmanager
  from typing import Generator, List, Union, cast
  import torch
label_desc: Use image node_id 10 for calling a global function with example usage: as_cuda(stream) and returns: cast