code: def parse_original_feature_from_example(example, feature_name):
    
    feature = get_example_features(example)[feature_name]
    feature_type = feature.WhichOneof('kind')
    original_value = proto_value_for_feature(example, feature_name)
  
    return OriginalFeatureList(feature_name, original_value, feature_type)
docs: Returns an `OriginalFeatureList` for the specified feature_name.
  
    Args:
      example: An example.
      feature_name: A string feature name.
  
    Returns:
      A filled in `OriginalFeatureList` object representing the feature.