src/transformers/models/hubert/modeling_tf_hubert.py/TFHubertForCTC/freeze_feature_encoder
class TFHubertForCTC:    def freeze_feature_encoder(self):
        """
        Calling this function will disable the gradient computation for the feature encoder so that its parameter will
        not be updated during training.
        """
        self.hubert.feature_extractor.trainable = False