src/transformers/models/xlm_roberta/modeling_tf_xlm_roberta.py/TFXLMRobertaPooler/__init__
class TFXLMRobertaPooler:    def __init__(self, config: XLMRobertaConfig, **kwargs):
        super().__init__(**kwargs)

        self.dense = tf.keras.layers.Dense(
            units=config.hidden_size,
            kernel_initializer=get_initializer(config.initializer_range),
            activation="tanh",
            name="dense",
        )