src/transformers/models/visual_bert/modeling_visual_bert.py/VisualBertForMultipleChoice/__init__
class VisualBertForMultipleChoice:    def __init__(self, config):
        super().__init__(config)

        self.visual_bert = VisualBertModel(config)
        self.dropout = nn.Dropout(config.hidden_dropout_prob)
        self.cls = nn.Linear(config.hidden_size, 1)

        # Initialize weights and apply final processing
        self.post_init()