src/transformers/models/xlm_roberta/modeling_xlm_roberta.py/XLMRobertaModel/__init__
class XLMRobertaModel:    def __init__(self, config, add_pooling_layer=True):
        super().__init__(config)
        self.config = config

        self.embeddings = XLMRobertaEmbeddings(config)
        self.encoder = XLMRobertaEncoder(config)

        self.pooler = XLMRobertaPooler(config) if add_pooling_layer else None

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