src/transformers/models/data2vec/modeling_tf_data2vec_vision.py/TFData2VecVisionPooler/__init__
class TFData2VecVisionPooler:    def __init__(self, config: Data2VecVisionConfig, **kwargs):
        super().__init__(**kwargs)
        self.layernorm = (
            tf.keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layernorm")
            if config.use_mean_pooling
            else None
        )