src/transformers/models/van/modeling_van.py/VanForImageClassification/__init__
class VanForImageClassification:    def __init__(self, config):
        super().__init__(config)
        self.van = VanModel(config)
        # Classifier head
        self.classifier = (
            nn.Linear(config.hidden_sizes[-1], config.num_labels) if config.num_labels > 0 else nn.Identity()
        )

        # Initialize weights and apply final processing
        self.post_init()