src/transformers/models/mvp/modeling_mvp.py/MvpForQuestionAnswering/__init__
class MvpForQuestionAnswering:    def __init__(self, config):
        super().__init__(config)

        config.num_labels = 2
        self.num_labels = config.num_labels

        self.model = MvpModel(config)
        self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels)

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