src/transformers/models/roformer/modeling_roformer.py/RoFormerForMultipleChoice/__init__
class RoFormerForMultipleChoice:    def __init__(self, config):
        super().__init__(config)

        self.roformer = RoFormerModel(config)
        self.sequence_summary = SequenceSummary(config)
        self.classifier = nn.Linear(config.hidden_size, 1)

        self.init_weights()