code: def test_fp16_parameters(self):
      n, c, h, w = 8, 2560, 16, 16
      self.verify_group_norm(
          GroupNorm,
          N=n,
          C=c,
          H=h,
          W=w,
          G=16,
          xdtype=torch.float16,
          wdtype=torch.float16,
          act="swish",
      )
  
imports: import torch
  import unittest
label_desc: Use image node_id 17 for calling the GroupNormTest obj's underlying member method code with example usage: obj.test_fp16_parameters() without return types