code: def setUp(self) -> None:
      self.img = torch.rand(1, 3, 32, 100)
  
imports: from unittest import TestCase
  import torch
  from mmocr.models.common.plugins import AvgPool2d
label_desc: Use image node_id 1 for calling the TestAvgPool2d obj's underlying member method code with example usage: obj.setUp() without return types