class_docstr: Helper for constructing group Conv2ds. Sets the reference kernel layout to what x86 code
  supports.
code: def setup_method(self):
      self.ref_kernel_layout = "HWIO"
  
file_path: tvm/tests/python/relay/strategy/arm_cpu/test_group_conv2d.py
imports: from test_generalized_conv2d import GeneralizedConv2dTests
  from tvm.testing import main, parameter, parameters
label_desc: Use image node_id 1 for calling the GroupConv2dTests obj's underlying member method code with example usage: obj.setup_method() without return types