src/transformers/models/maskformer/feature_extraction_maskformer.py/MaskFormerFeatureExtractor/__init__
class MaskFormerFeatureExtractor:    def __init__(self, *args, **kwargs) -> None:
        warnings.warn(
            "The class MaskFormerFeatureExtractor is deprecated and will be removed in version 5 of Transformers."
            " Please use MaskFormerImageProcessor instead.",
            FutureWarning,
        )
        super().__init__(*args, **kwargs)