code: def test_result(self, args, input_data, expected_output):
      res = LargestCCd(**args)(input_data)
      np.testing.assert_equal(res["pred"], expected_output)
  
imports: import os
  import tempfile
  import unittest
  import numpy
  from parameterized import parameterized
  from monailabel.transform.post import BoundingBoxd, DumpImagePrediction2Dd, ExtremePointsd, FindContoursd, LargestCCd, MergeAllPreds, RenameKeyd, Restored
label_desc: Use image node_id 1 for calling the TestLargestCCd obj's underlying member method code with example usage: obj.test_result(args, input_data, expected_output) without return types