src/transformers/models/xlm/modeling_xlm.py/XLMForQuestionAnsweringSimple/__init__
class XLMForQuestionAnsweringSimple:    def __init__(self, config):
        super().__init__(config)

        self.transformer = XLMModel(config)
        self.qa_outputs = nn.Linear(config.hidden_size, config.num_labels)

        self.init_weights()