def METHOD_NAME(cls, data, label, sample_weight=None, init_score=None):
    data = cls._convert_tileable(data)
    label = cls._convert_tileable(label)
    sample_weight = cls._convert_tileable(sample_weight)
    init_score = cls._convert_tileable(init_score)
    return TrainTuple(data, label, sample_weight, init_score)