code: def setUp(self):
      pass
  
file_path: BigDL/python/chronos/test/bigdl/chronos/pytorch/loss/test_linex.py
imports: from bigdl.chronos.utils import LazyImport
  from unittest import TestCase
  import pytest
  from ...None import op_torch
label_desc: Use image node_id 1 for calling the TestChronosPytorchLoss obj's underlying member method code with example usage: obj.setUp() without return types