class_docstr: Helper class to avoid loading a dataset column into memory when accessing it.
code: def __init__(self, dataset: Dataset, key: str):
      self.dataset = dataset
      self.key = key
  
file_path: evaluate/src/evaluate/evaluator/utils.py
imports: from datasets import Dataset, get_dataset_split_names
label_desc: Use image node_id 1 to create a new DatasetColumn object from inherited base classes: list with example: obj = DatasetColumn(dataset, key)