code: def get_subnet_constructor(non_linearity, reduction_factor):
      def subnet(dims_in, dims_out):
          return nn.Sequential(
              nn.Linear(dims_in, int(dims_in // reduction_factor)),
              Activation_Function_Class(non_linearity),
              nn.Linear(int(dims_in // reduction_factor), dims_out),
          )
  
      return subnet
  
imports: import math
  import torch
  from torch import nn
  from transformers.activations import get_activation
  from ..configuration import AdapterFusionConfig, BnConfig
  from ..context import ForwardContext
label_desc: Use image node_id 1 for calling a global function with example usage: get_subnet_constructor(non_linearity, reduction_factor) and returns: subnet, nn