src/transformers/models/qdqbert/modeling_qdqbert.py/QDQBertAttention/__init__
class QDQBertAttention:    def __init__(self, config):
        super().__init__()
        self.self = QDQBertSelfAttention(config)
        self.output = QDQBertSelfOutput(config)
        self.pruned_heads = set()