code: def test_rank_classification(self):
      self.assertEqual(postprocessors.rank_classification(-13.4), -13.4)
  
file_path: text-to-text-transfer-transformer/t5/data/postprocessors_test.py
imports: from absl.testing import absltest
  import numpy
  from t5.data import postprocessors
label_desc: Use image node_id 9 for calling the PostprocessorsTest obj's underlying member method code with example usage: obj.test_rank_classification() without return types