src/transformers/models/groupvit/modeling_groupvit.py/GroupViTVisionTransformer/__init__
class GroupViTVisionTransformer:    def __init__(self, config: GroupViTVisionConfig):
        super().__init__()
        self.config = config
        embed_dim = config.hidden_size

        self.embeddings = GroupViTVisionEmbeddings(config)
        self.encoder = GroupViTVisionEncoder(config)
        self.layernorm = nn.LayerNorm(embed_dim, eps=config.layer_norm_eps)