src/transformers/models/owlvit/modeling_owlvit.py/OwlViTVisionTransformer/__init__
class OwlViTVisionTransformer:    def __init__(self, config: OwlViTVisionConfig):
        super().__init__()
        self.config = config

        self.embeddings = OwlViTVisionEmbeddings(config)
        self.pre_layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
        self.encoder = OwlViTEncoder(config)
        self.post_layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)