code: def test_all_data_is_present(self):
      for data_set, variant in dt.available_data_sets():
          self.assertIn((data_set, variant), ALL_SET_TEST_CASES)
  
imports: import random
  import unittest
  import skmultilearn.dataset
label_desc: Use image node_id 1 for calling the ClassifierBaseTest obj's underlying member method code with example usage: obj.test_all_data_is_present() without return types