code: def unwrap_channel_dict(
      channel_dict: Dict[str, Channel]
  ) -> Dict[str, List[types.Artifact]]:
      return channel_utils.unwrap_channel_dict(channel_dict)
  
imports: from typing import Dict, Iterable, List, Union
  from tfx import types
  from tfx.types import channel_utils
  from tfx.utils import deprecation_utils
label_desc: Use image node_id 2 for calling a global function with example usage: unwrap_channel_dict(channel_dict) and returns: channel_utils