code: def normalization(in_channels, act="", gn_groups=32):
      return GroupNorm(
          num_groups=gn_groups,
          num_channels=in_channels,
          eps=1e-5,
          affine=True,
          act=act,
      )
  
imports: import math
  import numpy
  import torch
  import torch.nn
  from apex.contrib.group_norm import GroupNorm
  from einops import repeat
  from torch._dynamo import disable
  from torch.cuda.amp import custom_bwd, custom_fwd
label_desc: Use image node_id 12 for calling a global function with example usage: normalization(in_channels, act, gn_groups) and returns: GroupNorm