src/transformers/models/ernie/modeling_ernie.py/ErnieModel/__init__
class ErnieModel:    def __init__(self, config, add_pooling_layer=True):
        super().__init__(config)
        self.config = config

        self.embeddings = ErnieEmbeddings(config)
        self.encoder = ErnieEncoder(config)

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

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