code: def test_unique_checkpoint_names():
      stories_path = "data/test_yaml_stories/story_with_two_equal_or_statements.yml"
      domain_path = "data/test_domains/default_with_slots.yml"
      domain = Domain.load(domain_path)
      story_steps = rasa.shared.core.training_data.loading.load_data_from_resource(
          stories_path, domain
      )
      start_checkpoint_names = {
          chk.name for s in story_steps for chk in s.start_checkpoints
      }
  
      # first story:
      # START_CHECKPOINT, GENR_OR_XXXXX for first OR, GENR_OR_YYYYY for second OR
  
      # additional in second story:
      # GENR_OR_ZZZZZ as entities are different from first OR in first story
      assert len(start_checkpoint_names) == 4
  
file_path: rasa/tests/shared/core/training_data/test_graph.py
imports: from rasa.shared.core.training_data.structures import StoryGraph
  import rasa.shared.core.training_data.loading
  from rasa.shared.core.domain import Domain
label_desc: Use image node_id 6 for calling a global function with example usage: test_unique_checkpoint_names() without return types