src/transformers/models/blip/modeling_blip.py/BlipEncoder/__init__
class BlipEncoder:    def __init__(self, config: BlipConfig):
        super().__init__()
        self.config = config
        self.layers = nn.ModuleList([BlipEncoderLayer(config) for _ in range(config.num_hidden_layers)])
        self.gradient_checkpointing = False