class_docstr: Spatial Gating Unit
  
  Based on: `Pay Attention to MLPs` - https://arxiv.org/abs/2105.08050
code: def init_weights(self):
      # special init for the projection gate, called as override by base model init
      nn.init.normal_(self.proj.weight, std=1e-6)
      nn.init.ones_(self.proj.bias)
  
imports: import math
  from functools import partial
  import torch
  import torch.nn
  from timm.data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
  from timm.layers import PatchEmbed, Mlp, GluMlp, GatedMlp, DropPath, lecun_normal_, to_2tuple
  from ._builder import build_model_with_cfg
  from ._manipulate import named_apply, checkpoint_seq
  from ._registry import generate_default_cfgs, register_model, register_model_deprecations
label_desc: Use image node_id 2 for calling the SpatialGatingUnit obj's underlying member method code with example usage: obj.init_weights() without return types