src/transformers/models/convbert/modeling_convbert.py/ConvBertForMaskedLM/__init__
class ConvBertForMaskedLM:    def __init__(self, config):
        super().__init__(config)

        self.convbert = ConvBertModel(config)
        self.generator_predictions = ConvBertGeneratorPredictions(config)

        self.generator_lm_head = nn.Linear(config.embedding_size, config.vocab_size)
        # Initialize weights and apply final processing
        self.post_init()