src/transformers/models/electra/modeling_electra.py/ElectraForMultipleChoice/__init__
class ElectraForMultipleChoice:    def __init__(self, config):
        super().__init__(config)

        self.electra = ElectraModel(config)
        self.sequence_summary = SequenceSummary(config)
        self.classifier = nn.Linear(config.hidden_size, 1)

        self.init_weights()