def forward(self, x):
    x = self.prepare_tokens(x)
    for blk in self.blocks:
        x = blk(x)
    x = self.norm(x)
    return x[:, 0]
def forward(self, x):
    x = self.prepare_tokens(x)
    for blk in self.blocks:
        x = blk(x)
    x = self.norm(x)
    return x[:, 0]