code: def test_get_random_block(self):
      block = common.get_random_block(["a", "b", "c"])
      self.assertIn(block, ["a", "b", "c"])
  
file_path: model_search/model_search/search/common_test.py
imports: from absl.testing import parameterized
  from model_search.search import common
  import tensorflow.compat.v2
label_desc: Use image node_id 3 for calling the CommonTest obj's underlying member method code with example usage: obj.test_get_random_block() without return types