code: def none_throws(
      optional: Optional[_T], message: str = "Unexpected `None`"
  ) -> _T:
      """Convert an optional to its value. Raises an `AssertionError` if the
      value is `None`"""
      if optional is None:
          raise AssertionError(message)
      return optional
  
imports: import copy
  import logging
  from collections import OrderedDict
  from itertools import accumulate
  from typing import Any, Dict, List, Optional, Set, Type, TypeVar, Union
  import torch
  from fbgemm_gpu.split_embedding_configs import EmbOptimType
  from torch import nn
  from torchrec import optim
  from torchrec.distributed.embedding_types import EmbeddingComputeKernel
  from torchrec.distributed.types import DataType, ParameterSharding, ShardedModule, ShardingType
  from torchrec.modules.embedding_configs import data_type_to_sparse_type
  from torchrec.types import CopyMixIn
label_desc: Use image node_id 1 for calling a global function with example usage: none_throws(optional, message) and returns: optional