class_docstr: Test that S3 failures are handled correctly.
class_docstr_tok: ["Test","that","S3","failures","are","handled","correctly","."]
code: def step_start(self):
      # we need a unique artifact for every run which we can reconstruct
      # independently in the start and end tasks
      from metaflow import current
  
      self.x = "%s/%s" % (current.flow_name, current.run_id)
  
imports: from metaflow_test import MetaflowTest, ExpectationFailed, steps
label_desc: Use image node_id 1 for calling the S3FailureTest obj's underlying member method code with example usage: obj.step_start() without return types