code: def test_name(self):
      head = ranking_head.create_ranking_head(
          loss_fn=_make_loss_fn(), name="fake_head"
      )
      self.assertEqual("fake_head", head.name)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  from tensorflow import estimator
  from tensorflow_ranking.python import head
  from tensorflow_ranking.python import metrics
label_desc: Use image node_id 2 for calling the RankingHeadTest obj's underlying member method code with example usage: obj.test_name() without return types