code: def start(self):
      self.non_modified_passdown = "a"
      self.modified_to_same_value = "b"
      self.manual_merge_required = "c"
      self.ignore_me = "d"
  
file_path: metaflow/test/core/tests/merge_artifacts_include.py
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps
label_desc: Use image node_id 1 for calling the MergeArtifactsIncludeTest obj's underlying member method code with example usage: obj.start() without return types