About nn.SiLU(), is the model structure drawn incorrectly?

[YuqiZhang-Buaa]

I noticed that the authors have drawn nn.SiLU() in the model structure. However, I found that no nn.SiLU() plays a role in the model. line 109 of srmamba.py self.act = nn.SiLU() commented out doesn't report an error. lines 200-232 of srmamba.py, including mamba_inner_fn_no_out_proj, don't use nn. SiLU(). As I understand it, nn.SiLU() in Vision Mamba is done via Block encapsulation. So can I assume that this is a model structure drawing error in MambaMIL?